七年级数学整式的加减法计算题大全 255Word格式.docx
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66
11
-—(3k3-2k2+7)-—(2k3+k2+9k)
22
(2k2-7k)+(6k2-7k+8)
(9a2-3a+3b)-(5a2+8a-9b)
3x2+(5x2-4x-6)-(9x+2)
y2-(2x2-y)+(x2-8y2)
5
(5x2-2xy+—x)+(9x2-4xy+9x)
4
21
(—xy-7y2-2)+(x2+—xy-3y2+8)
38
55
(xy+—y+—)-(xy+x-9)
66
(6y+2x+2z2)+(3y+5x-6z2)
(9m2+6m+7)+(6m+6n-6)
(7x2-2x-6)+4(4x2-3x)
-6(x2-3)-7(x2-1)
-(x2y+6xy+6)-3(x2y+9xy+7)
44
(—x2+20x-15y)-(—x2+13x+14y)
33
-—(4k3-k2-5)-—(7k3-9k2-5k)
45
(7k2+2k)+(k2+9k+1)
(a2-6a+2b)+(3a2-3a-9b)
4x2+(5x2+2x-4)+(3x-3)
y2-(5x2+y)-(9x2+9y2)
9
(x2+9xy+—x)-(4x2+9xy-7x)
8
18
(—xy-3y2+1)+(x2+—xy-3y2+7)
57
41
(xy+—y-—)-(xy+x+8)
37
(3y+7x-4z2)-(9y-8x+2z2)
(m2-6m-3)+(9m+9n-4)
(8x2+8x+7)-2(x2+4x)
-4(x2+7)+8(x2-6)
-(x2y-3xy-6)+9(x2y+4xy-6)
77
(—x2+14x-16y)+(—x2+13x+19y)
88
-—(5k3-6k2-8)-—(9k3-2k2+5k)
(6k2+2k)+(k2+3k+6)
(7a2+8a+6b)+(9a2-8a+4b)
5x2-(2x2-5x-4)+(9x+8)
5y2+(6x2+y)+(4x2+5y2)
1
(4x2+9xy-—x)+(2x2-7xy+4x)
6
51
(—xy+4y2-7)-(x2-—xy+5y2+6)
16
(xy+—y-—)+(xy-x+9)
87
(6y+4x+9z2)-(3y-6x-5z2)
(2m2+7m-4)-(6m-6n-5)
(x2-2x+7)+5(2x2+6x)
-4(x2-9)+5(x2-9)
-(x2y-4xy-5)+9(x2y+3xy+6)