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=-63+84-90+70,
                       x=1;
故答案为:1