七年级数学整式的加减法计算题大全 219Word文件下载.docx
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(7a2+a+8b)+(5a2-5a+3b)
6x2+(4x2-5x-7)-(6x+1)
7y2-(3x2+y)-(8x2+7y2)
7
(x2+8xy-—x)+(2x2+8xy+2x)
6
41
(—xy+4y2+1)+(x2+—xy-7y2-3)
33
54
(xy+—y-—)-(xy+x+8)
45
(6y+8x-5z2)-(8y+3x-6z2)
(2m2+2m-9)+(8m+n+3)
(9x2-4x+2)+4(5x2-2x)
-5(x2-2)+8(x2+4)
-(x2y+3xy-3)-9(x2y+9xy+9)
(—x2-16x+18y)+(—x2+20x-24y)
-—(3k3-3k2+6)-—(4k3+9k2-5k)
63
(2k2-4k)+(8k2+4k-8)
(3a2-9a+b)+(5a2+4a-b)
6x2+(6x2+6x-6)+(4x-1)
3y2-(7x2+y)-(5x2+2y2)
(3x2-xy-—x)-(x2+6xy+3x)
81
(—xy-y2-8)+(x2-—xy+9y2-7)
74
16
(xy-—y-—)-(xy-x+3)
(8y-2x-4z2)-(2y-2x-3z2)
(4m2+7m+6)+(8m+6n-5)
(x2-4x+7)-5(7x2+4x)
-2(x2-7)-9(x2+1)
-(x2y+9xy+9)-6(x2y-6xy-7)
(—x2-18x-11y)+(—x2+11x-12y)
88
-—(7k3+2k2+2)-—(4k3+5k2-6k)
66
(3k2-2k)-(4k2+9k+3)
(5a2+7a-7b)-(7a2-4a+b)
6x2+(5x2+5x-9)-(3x-9)
2y2+(6x2+y)-(9x2+5y2)
1
(6x2+5xy-—x)+(8x2-xy-5x)
3
75
(—xy-9y2-9)+(x2+—xy+4y2-9)
86
56
(xy+—y+—)-(xy+x-3)
47
(6y+4x-7z2)-(3y-8x+z2)
(6m2-4m+6)-(8m-6n-5)
(9x2-3x-7)-2(8x2-7x)
-6(x2+8)+9(x2+7)
-(x2y+7xy+4)-2(x2y-9xy+3)
14
(—x2-19x+12y)+(—x2+18x-28y)
55
-—(3k3-9k2+1)-—(2k3+9k2+2k)
42
(3k2-3k)-(9k2+2k+4)
(6a2-2a+9b)-(5a2-a+5b)