七年级数学整式的加减法计算题大全 407文档格式.docx
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(—xy+4y2-5)+(x2+—xy-6y2+8)
83
19
(xy-—y-—)-(xy+x+6)
58
(6y-9x+4z2)-(5y-7x-5z2)
(5m2-7m+2)+(7m+6n+1)
(9x2-x-8)+4(3x2+2x)
-5(x2+2)+8(x2+5)
-(x2y-4xy+2)+6(x2y-3xy-3)
11
(—x2+13x+14y)-(—x2+14x+23y)
88
-—(k3+k2+9)-—(k3-8k2-4k)
25
(6k2-5k)-(6k2+7k-7)
(6a2+a-b)+(9a2-5a+9b)
x2-(7x2-3x+2)+(3x+2)
7y2+(2x2-y)+(7x2+4y2)
4
(x2+4xy+—x)-(x2+xy-3x)
3
15
(—xy+6y2-9)+(x2-—xy+2y2-9)
36
44
(xy-—y+—)+(xy+x-7)
53
(8y-9x-6z2)-(7y+6x+6z2)
(2m2-4m-2)-(7m+3n-3)
(3x2+4x+5)-3(9x2+x)
-5(x2-3)-2(x2+8)
-(x2y-9xy+7)-5(x2y-2xy+4)
17
(—x2+21x-19y)-(—x2-17x+22y)
-—(k3+8k2+3)+—(2k3-6k2+4k)
62
(5k2-7k)+(4k2-7k+6)
(6a2-9a-4b)+(5a2+4a+4b)
6x2+(2x2+x-7)-(3x-7)
2y2+(4x2-y)+(5x2+6y2)
7
(6x2-6xy-—x)+(9x2+4xy-9x)
6
41
(—xy+9y2-3)+(x2+—xy-7y2+2)
33
39
(xy+—y+—)-(xy-x+7)
48
(2y-3x+9z2)-(2y-4x-z2)
(4m2-9m+6)-(9m+n-8)
(6x2+9x+9)+9(7x2+x)
-4(x2-1)+5(x2-6)
-(x2y+6xy-8)-2(x2y+8xy+5)
(—x2+29x-11y)-(—x2-15x-26y)
44
-—(2k3-9k2+5)+—(k3+2k2-3k)
24
(5k2-8k)-(3k2-6k+7)
(a2-9a-4b)+(a2+3a+3b)
3x2-(x2-x-9)+(2x+3)
8y2+(3x2+y)-(7x2+5y2)
(8x2-5xy+—x)-(3x2+4xy+4x)
16
(—xy+7y2+1)+(x2-—xy+6y2+8)
45