3(2x-0.3)=5x 0.7急,越快越好

问题描述:

3(2x-0.3)=5x 0.7
急,越快越好

3(2x-0.3)=5x 0.7
6X-0.9=3.5
6X=3.5+0.9
6X=4.4
X=0.74