X-(1/3*X+20)-(1/4*x+30)=30的计算过程

Answer 1

X-(1/3*X+20)-(1/4*x+30)=30;
x-1/3x-20-1/4x-30=30;
x-1/3x-1/4x=30+20+30;
12/12x-4/12x-3/12x=80;
5/12x=80;
x=232