10*6*x=400+20x如何算?
问题描述:
10*6*x=400+20x如何算?
答
60x=400+20x
60x-20x=400
40x=400
x=10
10*6*x=400+20x如何算?
60x=400+20x
60x-20x=400
40x=400
x=10