化简 (2x-3y)+(5x+4y) (8a-7b)-(4a-5b) a-(2a+b)+2(a-2b) 3(5x+4)-(3x-5)
问题描述:
化简 (2x-3y)+(5x+4y) (8a-7b)-(4a-5b) a-(2a+b)+2(a-2b) 3(5x+4)-(3x-5)
(8x-3y)-(4x+3y-z)+2z
答
7x+y 4a-2ba-5b12x+174x-6y+3z