七年级数学下册整式的加减法练习题精选强烈推荐 16Word格式.docx
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(7m2-3m+7)-(5m+6n-7)
(3x2+3x-6)-3(8x2+2x)
-9(x2-1)-8(x2+2)
-(x2y+4xy+9)-5(x2y+4xy+7)
11
(—x2-30x+19y)+(—x2-19x-20y)
55
-—(2k3-5k2-9)-—(2k3+k2-7k)
44
(6k2-7k)-(6k2+k+2)
(3a2+6a+2b)-(7a2-4a-8b)
5x2-(3x2+x+7)+(9x-5)
2y2-(5x2-y)-(9x2+3y2)
1
(8x2-6xy+—x)-(9x2-3xy-9x)
8
27
(—xy+9y2+9)+(x2+—xy-6y2+5)
38
56
(xy-—y+—)-(xy+x+6)
45
(9y-x+5z2)+(8y+5x+6z2)
(7m2+7m-2)-(5m+2n+4)
(6x2-3x-3)-5(2x2-8x)
-9(x2-8)-5(x2+7)
-(x2y-8xy-6)-5(x2y+5xy-9)
31
(—x2+11x+18y)+(—x2+18x+29y)
-—(6k3-3k2+2)+—(5k3-6k2-6k)
46
(6k2+3k)+(k2-3k+1)
(a2+7a-6b)+(8a2+8a-2b)
x2+(6x2+3x-1)-(7x-7)
y2+(9x2+y)-(9x2+9y2)
6
(5x2+9xy-—x)+(4x2-3xy-2x)
7
(—xy-4y2-4)+(x2+—xy+5y2+4)
41
(xy-—y-—)-(xy+x-3)
34
(3y-9x+3z2)+(7y-8x+9z2)
(2m2+7m-2)-(2m+4n-2)
(5x2-8x-7)-8(2x2-8x)
-4(x2-1)+6(x2+5)
-(x2y+2xy+9)-2(x2y+7xy+4)
99
(—x2-17x-11y)+(—x2+10x+29y)
88
-—(6k3+6k2+9)+—(9k3-3k2+5k)
22
(6k2+6k)-(6k2+k+3)
(9a2-3a-3b)+(5a2-2a+b)
6x2+(7x2-3x-5)-(5x-4)
9y2-(x2-y)+(5x2-y2)
(6x2-5xy+—x)-(8x2-3xy-9x)
(—xy-3y2-4)-(x2+—xy+2y2-3)
11
(xy+—y-—)-(xy+x-8)
48
(y-5x+6z2)+(9y-6x+6z2)
(m2+3m+9)+(9m+n-9)