1.乘以143得 13(22x-1)=11(2+13x)-91
286x-13=22+143x-91
286x-143x=22-91+13
143x=-56
x=-56/143
2.乘以2得 x=6x+2
6x-x=-2
5x=-2
x=-2/5
3.乘以6得 2(2x-1)=2x+1-6
4x-2=2x-5
4x-2x=-5+2
2x=-3
x=-3/2