一、解方程专题7+=19 X+120=176 58+X= 90 X+150=290+X= 2X+55=129 7 X=63 X× 9==444 X × =90X × 5=100 =124X-6=19 = = =10 0X-77=275 X-77=144 X ÷7=9 X÷=10X÷78= X÷=100 X÷3=X÷=89-X= = 87-X=2266-X=77-X= 99-X= ÷X= ÷X=9÷X= 7÷X= 56÷X=539÷X=33×(X-4)=46 (８+X)÷5=15(X+5) ÷3=1615÷(X+=12X+8X=40 12X-8X=40 12X+X=26 X+ =6=32 +X=26 3X+5X=48 14X-8X=126×5+2X=44 20X-50=50 28+6X=8832-22X=1024-3X=3 10X×（5+1）=60 99X=100-X X+3=18X-6=12 56-2X=204X+2=6 X+32=763X+6=18 16+8X=40 2X -8=8 4X-3×9=298X-3X=105 X-6×5=42 X+5=72X+3=10=6 12X+8X= 7(X-2)=494×8+2X=36(X-2)÷3=7 X÷5+9=21 (200-X)÷5 =30 48-27+5X=313X-8=16 3X+9=27 +7X=3X÷5=5×3-X=8 40-8X=5 X ÷5=215 X+25=100X+15=30 2X+8=2020-2X=6 2X+9= 3135-5X=10 5（X-6）=20 10（9-X）=20 6(X-3)=123(X-9)=33 54-X=247X=49 126÷X=4212÷X= -X= = +6×5=37(10 X-25)÷5=152X = -X = 13(X + 5 ) = 1692X+8=16 X÷5=10 X+7X=8 9X-3X=66X-8=4 5X+X=9 X÷5=10 X+7X=8X-8=6X 4÷5X=20 2X-6=12 2X+8=169X-3X=6 6X-8=4 5X+X=9 X-8=6X4÷5X=20 2X-6=12 1÷2X-8=4 X-5÷6=77X+7=14 6X-6=0 5X+6=11 2X-8=103X+7=28 3X-7=26 9X-X=16 24X+X=506÷7X-8=4 3X-8=30 6X+6=12 3X-3=15X-3X=4 2X+16=19 5X+8=19 14-6X=815+6X=27 5-8X=4 7X+8=15 7X+7=146X-6=0 5X+6=11 2X-8=10 2X-8=4X-5÷6=7 3X+7=28 3X-7=26 9X-X=1624X+X=50 6÷7X-8=4 3X-8=30 6X+6=123X-3=1 5X-3X=4 2X+16=19 5X+8=1914-6X=8 15+6X=27 5-8X=4 7X+8=159-2X=1 4+5X=9 10-X=8 8X+9=179+6X=14 X+9X=4+7 2X+9=17 8-4X=66X-7=12 7X-9=8 X-56=1 8-7X=1 X-30=12 6X-21=21 6X-3=6 9X=18 4X-18=13 5X+9=11 6-2X=11 26×= 2X X+4+8=23 7X-12=8 = 5X-2X=18= ÷X=0. 3 X÷= X+13=333 -5X=80 6X=54 9 +4X =4012 -4X=20 12X+34X=118X-14 X= 12 23 X-5×14 = 14 12 +34 X=56 22-14 X=1223 X-14 X= 14 X+14 X= 65 23 X=14 X +14 30X-12X-14X=15X-2X=30 89X-43X= 5X-45=100 40X+61=223 =2X=56 4X-X= 247X+114=3771X+3=124 35X+103=171 239X+51=119 187X+255=67 135X+203=15 83X+151=219 31X+99=167 137X+43=111 235X+47=115 183X+251=63 131X+199=11 79X+147=21579X+199=116 179X+247=59 127X+195=7 74X+142=210 22X+90=158 226X+38=106 174X+242=54 122X+190=2 70X+138=206 71X+191=107 128X+34=102 170X+238=50 118X+186=254 163X+24=190 198X+78=93 57X+172=78 66X+134=202 14X+82=150 218X+30=98 166X+234=46146X+214=26 94X+162=230 42X+110=178 42X+162=79 100X+6=74 142X+210=22 90X+158=226 38X+106=174 242X+54=122 239X+100=10 17X+153=169 133X+248=154 221X+33=101 222X+86=2 23X+185=253 65X+133=201 13X+81=149 217X+29=97 218X+82=254 19X+181=24961X+129=197 9X+77=145 6X+123=33 41X+177=193 156X+15=177 245X+57=125 245X+110=26 47X+209=21 89X+157=225 37X+105=173 37X+157=74 95X+1=69 137X+205=17 134X+251=161 169X+48=64 28X+143=49 169X+33=206 227X+133=201 13X+81=149 217X+29=97214X+74=240 248X+128=144 107X+222=128 249X+113=29 50X+212=24 145X+9=181 202X+108=176 244X+56=124 241X+102=12 20X+156=172 135X+250=156 20X+141=57 78X+240=52 120X+188=256 120X+241=157 178X+84=152 13X+130=40 48X+184=199 163X+22=184 48X+168=85106X+12=80 197X+58=224 232X+112=127 91X+206=112 232X+96=13 34X+196=8 128X+248=165 186X+92=160 21X+138=48 55X+191=207 171X+30=192 56X+176=92 113X+19=87 208X+72=244 9X+171=239 100X+217=127 135X+15=31 47X+214=224 245X+151=219 80X+197=107115X+251=11 230X+89=251 115X+236=152 173X+79=147 11X+132=48 69X+231=43 160X+21=187 195X+75=90 106X+17=28 49X+211=23 143X+7=180 250X+205=115 123X+3=18 34X+201=212 233X+139=207 68X+185=95 103X+238=254 14X+181=192 213X+119=187 51X+171=88158X+112=22 30X+166=182 198X+109=119 140X+46=114 235X+99=15 85X+40=206 214X+94=110 126X+37=47 117X+72=238 246X+126=142 157X+69=79 100X+6=74 194X+59=231 +X)+X=÷2 2(X+X+= 25000+X=6X450+5X+X=3200 =6 12X-8X= =X+= = 91÷X = X+=15X =3 3X-8=16 7(X-2)=2X+3 3X+9=27 18(X-2)=270 12X=300-4X 7X+= 3X÷5=30÷X+25=85 ×8-2X=6 ×3= 410-3X=170X+2X+18=78 (200-X)÷5=30 3(X+=21 +8=436X-3X=18 +18=3X ÷X= (X-140)÷70=4 = X÷=90 9X-40=5 X÷5+9=2148-27+5X=31 +X+21=56 (X+6)=× 4=7+X)= 2(X+X+= =12X-8X= *2X=15 = X+=91÷X = X+= 15X =3 3X-8=163X+9=27 8(X-2) =270 7X+= 3X÷5= 30÷X+25=85 ×8-2X=6 ×3= 410-3X=1703(X+=21 +8=43 6X-3X=18 +18=3X5×3-X÷2=8÷X= = X÷=909X-40=5 X÷5+9=21 48-27+5X=31 +X+21=56X+2X+18=78 (200-X) ÷5=30 (X-140)÷70=4 (X+6)=×4= 7+X)= X+== = ÷X= 5X+=5(X+8)=102 X+3X+10=70 3(X+3)=50-X+3 5X+15=60=2 ×7+4X= X÷ ×6=20-9X=× (X-3) ÷2= 6X+= 150×2+3X=690 2X-20=4 3X+6=18 2+X) = +9X=3X=X+100 X+= 6X+18=48 3(X+= 12X-9X= 13(X+5)=169 2X-97= =42X+25X=134 (X+= 2(X-3)= 65X+7=42 9X+4×=91 X+=134 +=51 89X-43X=5X-45=100 =2X=56 4X-X==28 = 5X-2X=18 3X+=5×2=+X 26×=2X+10 ×16-16×=4X =÷X=0. 3 23X=14X+14 X+14X=65 3-5X=80 +6X=54 9+4X =40 2X+8=1623X-14X=14 X+7X=8 9X-3X=6 6X-8=4 5X+X=9 X-8=6X 4/5X=20 2X-6=12 7X+7=14 6X-6=0 5X+6=11 2X-8=103X+7=28 3X-7=26 9X-X=16 24X+X=50 3X-8=30 6X+6=12 3X-3=1 5X-3X=4 2X+16=19 5X+8=19 14-6X=8 15+6X=27 5-8X=4 7X+8=15 9-2X=1 4+5X=9 10-X=8 8X+9=17 9+6X=14 2X+9=178-4X=6 6X-7=12 7X-9=8 X-56=1 8-7X=1 X-30=12 6X-21=21 6X-3=6 9X=18 4X-18=13 5X+9=11 6-2X=11 X+4+8=23 7X-12=8 = 5X-2X=183X =5 ×2= X 26×= 2X =÷X= X÷= 3-5X=80 =549+4X=40 12-4X=2012X＋34X=46 18X-14X=12 23 X-5×14=1412＋34X=56 22-14X=12 =6 12x-8x=二、小数一步加、减法应用题1、一本数学读物元，一本语文读物元。