七年级数学整式的加减法计算题大全 44.docx
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七年级数学整式的加减法计算题大全44
29
(xy-—y-—)-(xy-x+4)
38
(8y-9x+4z2)+(4y-6x+3z2)
(6m2-3m-3)-(9m-3n+2)
(x2+5x-7)-4(6x2-3x)
-3(x2-3)+3(x2-8)
-(x2y+7xy-8)+6(x2y-9xy+4)
18
(—x2-25x+13y)+(—x2-20x-28y)
77
11
-—(2k3+7k2+4)+—(7k3-2k2+4k)
23
(5k2-4k)+(7k2-8k+1)
(4a2+a-6b)+(4a2-9a+9b)
8x2+(6x2+7x-9)+(2x-8)
8y2-(7x2-y)-(2x2-2y2)
1
(4x2+3xy-—x)+(5x2+5xy-6x)
5
17
(—xy+9y2+1)-(x2-—xy-9y2-9)
56
11
(xy+—y-—)+(xy-x-5)
48
(7y+5x+9z2)+(8y+7x-9z2)
(4m2+7m-4)-(9m-8n+8)
(5x2+8x-4)+3(5x2-x)
-9(x2+8)-7(x2-5)
-(x2y+2xy+2)-2(x2y+3xy+4)
24
(—x2-23x+20y)+(—x2+18x+23y)
33
11
-—(8k3+3k2+6)+—(3k3+6k2+2k)
24
(6k2+4k)-(8k2-8k-7)
(9a2-2a+6b)+(4a2-4a+3b)
6x2-(5x2+3x-5)-(6x+4)
7y2+(x2-y)-(4x2-2y2)
5
(4x2+9xy+—x)+(3x2+3xy-8x)
6
11
(—xy-6y2+5)+(x2+—xy+2y2+9)
33
15
(xy+—y-—)+(xy-x+6)
36
(8y+x+z2)-(y-5x+7z2)
(6m2-4m+1)+(2m-7n+4)
(x2+6x-8)+9(3x2+6x)
-4(x2+8)+5(x2-5)
-(x2y+8xy-8)-9(x2y+5xy+5)
22
(—x2-16x-20y)+(—x2+17x+22y)
33
11
-—(4k3+5k2+3)+—(8k3-6k2-8k)
64
(k2-k)+(k2-6k+8)
(3a2+6a-3b)+(6a2+7a-7b)
4x2-(x2-7x-4)-(x+4)
9y2+(3x2+y)-(5x2-6y2)
4
(7x2-4xy-—x)+(4x2+xy-5x)
3
16
(—xy+6y2-9)-(x2+—xy-5y2+1)
85
21
(xy-—y-—)-(xy-x+8)
36
(9y+9x+8z2)+(8y+5x-4z2)
(6m2-6m+5)-(5m-7n-7)