七年级数学下册计算题 120Word文档下载推荐.docx
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-(-x+7y)+(x-9y)
(2s-5)-2(s2+s-2)
-6(a2b-ab2+ab2+a3)-(-9a2b+2ab2)
-(4mn-2m2-3n2)+(+mn+5m2-n2)
(a3+a2b+9)+(a2b-5)
-5(x3-y3+)-6(x3-y3+)
-(-x+8y)+(x-4y)
(7s+9)-2(s2+s-5)
-9(a2b-ab2+ab2-a3)+(-5a2b+9ab2)
-(5mn-3m2-2n2)-(+mn+5m2-n2)
(a3+a2b+5)-(a2b-4)
-2(x3-y3+)-2(x3-y3+)
-(-x+5y)-(x-5y)
(5s-1)-2(s2+s-6)
-8(a2b-ab2+ab2-a3)-(-7a2b+9ab2)
-(6mn-3m2+4n2)+(+mn+8m2+n2)
(a3+a2b+2)+(a2b-6)
-3(x3-y3+)-6(x3-y3+)
-(-x+9y)-(x-2y)
(9s+5)-2(s2-s-8)
-3(a2b-ab2+ab2+a3)-(-3a2b+6ab2)
-(3mn-2m2+2n2)+(+mn+3m2+n2)
(a3+a2b+6)-(a2b-6)
-6(x3-y3+)-5(x3-y3+)
(9s-6)-5(s2-s+8)
-7(a2b-ab2+ab2+a3)-(-7a2b+5ab2)
-(6mn-3m2-4n2)-(+mn+7m2+n2)
(a3+a2b+1)-(a2b-8)
-3(x3-y3+)+3(x3-y3+)
-(-x+3y)+(x-2y)
(3s-3)-5(s2-s+7)
-6(a2b-ab2+ab2-a3)+(-5a2b+5ab2)
-(6mn-2m2+3n2)-(+mn+3m2+n2)
(a3+a2b+8)+(a2b-5)
-2(x3-y3+)+3(x3-y3+)
-(-x+10y)+(x-8y)
(4s+5)-9(s2+s+6)
-2(a2b-ab2+ab2+a3)-(-3a2b+7ab2)
-(6mn-2m2+3n2)-(+mn+9m2+n2)
(a3+a2b+5)-(a2b-5)
-4(x3-y3+)+6(x3-y3+)
-(-x+5y)+(x-2y)
(4s+7)-6(s2-s+7)
-4(a2b-ab2+ab2-a3)-(-8a2b+8ab2)
-(2mn-3m2+3n2)-(-mn+6m2-n2)
(a3+a2b+8)+(a2b-6)
-(-x+4y)-(x-9y)
(8s-4)-4(s2+s-2)
-6(a2b-ab2+ab2-a3)-(-7a2b+8ab2)