3分之2(a+3)的2次方与b-1的绝对值互为相反数,
则 a+3=0,a=-3
b-1=0,b=1
a分之x-1=b分之2x-1
(x-1)/(-3)=(2x-1)/1
x-1=-3(2x-1)
x-1=-6x+3
7x=4
x=4/7