Question

解方程 6乘9-2/1x=5/24 7x+6x=31 0.7x-5=3/5 x170乘100%=85%

Answer 1

6乘9-2/1x=5/24

54-0.5x=4.8

0.5x=49.2

x=98.4

7x+6x=31

13x=31

x=31/13

0.7x-5=3/5

0.7x=5.6

x=8

x170乘100%=85%

170x=0.85

x=0.005