七年级数学整式的加减法计算题大全 297Word文档格式.docx
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(—x2-16x-20y)-(—x2+13x-22y)
44
11
-—(7k3-9k2+3)+—(4k3+6k2+2k)
22
(3k2+k)-(6k2+k-2)
(4a2-9a+5b)+(7a2-2a-7b)
8x2+(2x2-4x+1)+(7x-2)
6y2+(4x2+y)+(x2-4y2)
3
(5x2-2xy+—x)-(9x2+5xy-6x)
4
15
(—xy-3y2+4)+(x2-—xy+7y2+6)
76
11
(xy-—y+—)-(xy-x+3)
75
(4y-4x+4z2)+(5y+9x+6z2)
(8m2+8m+8)-(3m-6n-9)
(2x2-5x+4)-3(6x2-6x)
-5(x2-9)+5(x2+8)
-(x2y-9xy-7)+8(x2y+5xy+7)
66
(—x2+10x+15y)-(—x2-11x-21y)
55
-—(7k3+7k2-8)+—(7k3+7k2-9k)
25
(8k2-k)+(5k2-4k+6)
(6a2-a+4b)+(4a2-9a-9b)
6x2+(9x2-2x-4)+(9x-2)
2y2-(4x2-y)-(2x2+5y2)
1
(x2-xy-—x)-(4x2-xy-6x)
37
(—xy-6y2-3)-(x2-—xy-y2+5)
48
81
(xy-—y+—)-(xy-x+7)
76
(6y+8x+4z2)+(2y-4x-7z2)
(7m2-6m-2)+(5m-4n+9)
(3x2+4x+4)+7(9x2-5x)
-8(x2+6)+8(x2+2)
-(x2y-4xy+8)-3(x2y+3xy+2)
(—x2+20x-14y)+(—x2-18x+26y)
-—(9k3-3k2+2)+—(2k3-4k2+9k)
(k2+2k)-(5k2+7k+6)
(2a2-6a+5b)-(7a2+2a-8b)
x2+(6x2+4x+5)-(4x-2)
7y2-(x2-y)+(5x2-y2)
2
(9x2-8xy-—x)-(7x2-2xy+9x)
51
(—xy-7y2+5)+(x2-—xy+7y2+9)
46
41
(xy-—y-—)-(xy+x-6)
57
(y-9x-7z2)+(8y-5x-7z2)
(m2+m-7)+(8m-5n-8)
(8x2-7x+5)-8(9x2+8x)
-5(x2-7)+8(x2-9)
-(x2y-3xy-7)+3(x2y-4xy+3)