Question

1.X-9分之1X=20 2.3分之4乘5+3分之X=12 3.1+8分之3X=5分之4除3分之2 4.X-30分之11

Answer 1

1.X-9分之1X=20

(8/9)x=20

x=22.5

2.3分之4乘5+3分之X=12

20/3+x/3=12

20+x=36

x=16

3.1+8分之3X=5分之4除3分之2

1+3x/8 = 6/5

40+15x = 48

15x = 8

x = 8/15

4.X-30分之11X=57

30x - 11x = 1710

19x = 1710

x = 90

5.0.5X除5分之2=72乘4分1

x/2 × 5/2 = 18

5x/4 =18

x = 72/5

6.5分之4X=60%乘2分之1

4x/5=3/10

x=3/8