方程X=(X+50+70+70)*(3/5)怎么解

问题描述:

方程X=(X+50+70+70)*(3/5)怎么解

X=(X+50+70+70)*(3/5)
5x=3(x+190)
5x=3x+570
5x-3x=570
2x=570
x=285