0.7-0.6x/0.5-0.3x-1/0.2=1

问题描述:

0.7-0.6x/0.5-0.3x-1/0.2=1
/是除以

0.7 - 6x/5 - 0.3x - 5 = 1
- 1.2x - 0.3x = 1 + 5 - 0.7
-1.5x = 5.3
x = 5.3/(-1.5)
= -53/15