最新七年级上册整式的加减练习题.docx
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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)-xy]
2a3b-
a3b-a2b+
a2b-ab2
-(3a+2b)+(4a-3b+1)-(2a-b-3)
(a2+4ab-4b2)-3(a2+b2)-7(b2-ab).
5ab+(-4a2b2)+8ab2-(-3ab)+(-a2b)+4a2b2
5x2-[3x-2(2x-3)+7x2]3x2+x-5-2(4-x+7x2)
5y+3x+5z
+12y+7x-3z
3a-(2b-a)+b
2(x2-xy)-3(2x2-3xy)-2[x2-(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).3x2-[7x-(4x-3)-2x2].
5a+(4b-3a)-(-3a+b)5abc-2a2b+[3abc-2(4ab2-a2b)],
2(x2y+xyz)-3(x2y-xyz)-4x2y.
(5ab+4a+7b)+(6a-3ab)-(4ab-3b)
2a2-4a+1-2(a2-2a)+3