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?
答
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