解方程 100道练习题

3(x+0.5)=21 81÷3x=9 (27.5-3.5)÷x=4 30 x-5.6=9.4 12x=300-4x 7÷X=0.1

4X-X=48.6

32-22X=10

8X+9=17

9-X=4.5

48-27+5x=31 0.5x+8=43 14X+82=150 5x+9=11 5x+12.5=32.3 122X+190=2 2X=32

56÷X=5

179X+247=59

2X-8=10

X+3=18

187X+255=67

(0.5+x)+x=9.8÷2 91÷x＝1.3 239X+100=10 x÷5+9=21 3(x+3)=50-x+3 6x-3x=18 79.4+X=95.5

15+6X=27

156X+15=177

X+0.5X=6

4X+2=6

39÷X=3

x+19.8=25.8 18(x-2)=270 118X+186=254 1.2x-0.5x=6.3 100X+6=74 5X-2X=18 6X-7=12

95X+1=69

235X+47=115

20-2X=6

61X+129=197

3X+7=28

4.2x+2.5x＝134 x+4.8=7.2 3.5-5x=2 5x-3x=4 1.8x=0.972 23 x－5×14=14 X+25=100

4×8+2X=36

3X+6=18

X-5÷6=7

12X+8X=40

8-7X=1

218X+30=98 5x+x=9 6.7x－60.3＝6.7 9+6x=14 16.9÷X=0.3 2x-8=10 127X+195=7

9X-3X=6

5-8X=4

3X-8=30

18X-14 X= 12

4÷5X=20

x÷5+9=21 x+5.6=9.4 (x-3)÷2=7.5 (200-x)÷5=30 9x+4×2.5＝91 5X-2X=18 5X-45=100

X-77=275

X-0.8X=6

40X+61=223

X÷5=215

6(X-3)=12

15+6x=27 5.6x=33.6 x+9x=4+7 (x-140)÷70=4 70X+138=206 6x+12.8=15.8 5X+6=11

24-3X=3

6X+6=12

6×5+2X=44

135X+203=15

0.2X+0.5=3.7

0.1(x+6)=3.3×0.4 16.9÷X=0.3 198X+78=93 28+6X=88

6.75 -X=1.68

131X+199=11