2/5x-5=0.3(x-5) 等于多少?

问题描述:

2/5x-5=0.3(x-5) 等于多少?

2/5x-5=0.3(x-5)
0.4x-5=0.3x-1.5
0.4x-0.3x=-1.5+5
0.1x=3.5
∴x=35