數學方程唔識寫步驟= =

x(x+2+3) = x(x+3)+60
x(x+5) = x^2 + 3x + 60
x^2 + 5x = x^2 + 3x + 60
x^2 + 5x - x^2 - 3x = 60
2x = 60
x = 30

x(x+2+3)=x(x+3)+60
x^2+2x+3x=x^2+3x+60
x^2+5x=x^2+3x+60
5x=x^2+3x+60-x^2
5x=3x+60
5x-3x=60
2x=30
x=15

x(x+2+3)=x(x+3)+60
x2次+2x+3x=x2次+3x+60
x2次+5x=x2次+3x+60
x2次-x2次+5x-3x=60
2x=60
x=30

x(x+2+3)=x(x+3)+60
(x ge2次)+2x+3x=(x ge2次)+3x+60
(x ge2次)+5x=(x ge2次)+3x+60
(x ge2次)-(x ge2次)+5x=(x ge2次)+3x+60-(x ge2次)
5x=3x+60
5x-3x=3x+60-3x
2x=60
2x/2=60/2
x=30

滿唔滿意??

x(x+2+3)=x(x+3)+60
2x+2x+3x=2x+3x+60
7x=5x+60
7x-5x=60
2x=60
x=30