35（x-2)-15(x-6)=（22x-63)-21(3x-4)
35x-70-15x+90=2x-63-63x+84
(35-15-2+63)x=84-63+70-90
81x=-9
x=-1/9上面是22x-63到下面怎么抄成2x-63了啊晕,键盘不好用...35（x-2)-15(x-6)=（22x-63)-21(3x-4)35x-70-15x+90=22x-63-63x+84(35-15+63-22)x=84-63+70-9061x=1x=1/61