1.已知式子x-2/3的值比1+3x/4的值小1,求X .2.2（3x-1)=4(x+1)

(x-2)/3=(1+3x)/4-1
两边乘12
4x-8=3+9x-12
9x-4x=12-3-8
5x=1
x=1/5
2(3x-1)=4(x+1)
6x-2=4x+4
6x-4x=4+2
2x=6
x=3