4x-1.5 5x-0.8 1.2-x --- - --- = ---- 0.5 0.2 0.

问题描述:

4x-1.5 5x-0.8 1.2-x --- - --- = ---- 0.5 0.2 0.
4x-1.5 5x-0.8 1.2-x
--- - --- = ----
0.5 0.2 0.1

8x-3-(25x-4)=12-10x;
-17x+1=12-10x;
11=7x;
x=11/7