1.81X-342=76(X-2) 2.8*(X-3.6=4*(X+4.8) 3.0.75X=(10+X)*6

问题描述:

1.81X-342=76(X-2) 2.8*(X-3.6=4*(X+4.8) 3.0.75X=(10+X)*6

1、81x-76x=342-152
5x=190
x=38
2、8x-28.8=4x+19.2
4x=28.8+19.2
x=12
3、0.75x=60+6x
-5.25x=60
x=-80/7