Question

1.解方程.15_4X=1.6 6_5X/7_6=9_5 X/9_4=16_15/6_5 ...

Answer 1

15-4x=1.6

-4x=13.4

x=-3.35

6-5x/7-6=9-5

-5x/7=4

x=-28/5

x/9-4=16-15/6-5

x/9=13/12

12x=9*13

x=39/4

4-1+4-3/3=3+4-1=6

24/0.8/5-2=30/5-2=6-2=4

4-3*13-8/4=4-39-2=-37

2-12/8-7-3-1=-9-3/2=-21/2