1、最新七年级上册整式的加减练习题最新七年级上册整式的加减练习题(5a2-2a+3)-(1-2a+a2)+3(-1+3a-a2) 4a2+2(3ab-2a2)-(7ab-1)5a2-a2-(5a2-2a)-2(a2-3a) 3x2y-2x2y-3(2xy-x2y)-xy2a3b- a3b-a2b+ a2b-ab2 (3a2b)(4a3b1)(2ab3)(a2+4ab-4b2)-3(a2+b2)-7(b2-ab)5ab+(-4a2b2)+8ab2-(-3ab)+(-a2b)+4a2b25x2-3x-2(2x-3)+7x2 3x2x52(4x7x2) 5y+3x+5z+12y+7x-3z 3a-(2b
2、-a)+b2(x2-xy)-3(2x2-3xy)-2x2-(2x2-xy+y2)(x3+3x2y-5xy2+9y3)+(-2y3+2xy2+x2y-2x3)-(4x2y-x3-3xy2+7y3)5abc-2a2b-3abc-(4a2b-ab2 3a-2c-6a-(c-b)+c+(a+8b-6) (2x3-xyz)-2(x3-y3+xyz)+(xyz-2y3)(2xy-y)-(-y+yx) 5(a2b-3ab2)-2(a2b-7ab) (5a2+2a-1)-4(3-8a+2a2) 3x27x(4x3)2x25a+(4b-3a)-(-3a+b) 5abc-2a2b+3abc-2(4ab2-a2b), 2(x2y+xyz)-3(x2y-xyz)-4x2y (5ab+4a+7b)+(6a-3ab)-(4ab-3b)2a24a12(a22a)3