4x-20=2乘(50-x)咋么解?
问题描述:
4x-20=2乘(50-x)咋么解?
答
4x-20=100-2x
6x=120
x=20
4x-20=2乘(50-x)咋么解?
4x-20=100-2x
6x=120
x=20