化简:(请将化简的过程写详细)10a+6b+7a+3b-10a 4xy-2y+3x-xy 7×2-7xy+1 4-3y+1+6y5b-7c +9c+4z-3z 3ab+3c-6+8ab-7c3(x-2)-3x+12 (x+5y)-(3y-4x)9b-4c+3(c-2b) 2(2k-1)-(2k+1)
问题描述:
化简:(请将化简的过程写详细)
10a+6b+7a+3b-10a 4xy-2y+3x-xy
7×2-7xy+1 4-3y+1+6y
5b-7c +9c+4z-3z 3ab+3c-6+8ab-7c
3(x-2)-3x+12 (x+5y)-(3y-4x)
9b-4c+3(c-2b) 2(2k-1)-(2k+1)
答