1/2x+1/3x=3/4(解方程) 17-120%x=5 x-1\4x=1/2 x÷2/3-5x乘1/4=1/4

问题描述:

1/2x+1/3x=3/4(解方程) 17-120%x=5 x-1\4x=1/2 x÷2/3-5x乘1/4=1/4