4x + (120/3x - 40/60) x = 120怎么解?
问题描述:
4x + (120/3x - 40/60) x = 120怎么解?
RT
答
4x + (120/3x - 40/60) x = 120
4x + 40 - 2x/3 = 120
12x+120-2x=360
10x=240
x=24