35(x-2)-15(5x-6)=22x-63-21(3x-4)

问题描述:

35(x-2)-15(5x-6)=22x-63-21(3x-4)

35(x-2)-15(5x-6)=22x-63-21(3x-4),           35x-70-75x+90=22x-63-63x+84,         35x-75x-22x+63x=...