解方程x-12分之2x+1=1-4分之3x-2

问题描述:

解方程x-12分之2x+1=1-4分之3x-2
和1/2[x-1/2(x-1)]=2/3(x-1)

x-12分之2x+1=1-4分之3x-2 两边乘1212x-2x-1=12-9x+610x-1=18-9x10x+9x=18+119x=19x=11/2[x-1/2(x-1)]=2/3(x-1)1/2x-1/4x+1/2=2/3x-2/3 1/4x+1/2=2/3x-2/32/3x-1/4x=1/2+2/35/12x=7/6x=7/6÷5/12x=7/10