七年级数学下册整式的加减法计算题 627.docx
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七年级数学下册整式的加减法计算题627
(8y-3x-2z2)+(7y-2x-7z2)
(3k2-5k)-(2k2+6k-1)
(7a2+8a+7b)-(6a2-8a+3b)
9x2+(4x2-4x-5)+(5x+4)
5y2-(8x2-y)+(9x2+y2)
7
(4x2-8xy+—x)-(9x2+5xy+7x)
8
47
(—xy+8y2-8)-(x2+—xy+3y2+4)
56
18
(xy-—y+—)-(xy+x-5)
67
(3y+7x+6z2)+(8y-x-z2)
(k2-7k)-(6k2-6k+7)
(7a2-9a+2b)-(7a2+4a-3b)
7x2-(8x2-4x+4)-(6x+7)
4y2-(9x2+y)-(2x2-3y2)
1
(x2-5xy+—x)-(x2-3xy+2x)
8
11
(—xy+3y2-8)+(x2+—xy-4y2-5)
87
64
(xy-—y+—)-(xy-x-3)
55
(5y+5x-3z2)-(9y+2x-3z2)
(2k2-8k)-(k2-6k-9)
(7a2-2a-8b)-(9a2+2a-8b)
9x2-(2x2-8x-9)-(2x+8)
9y2+(8x2+y)-(9x2-4y2)
1
(x2-4xy-—x)-(8x2+8xy-2x)
4
51
(—xy-8y2+8)-(x2-—xy-6y2+9)
68
11
(xy+—y+—)-(xy-x+1)
36
(4y-2x+7z2)-(3y-9x+4z2)
(9k2+3k)-(7k2-4k-5)
(4a2+8a-b)+(2a2-9a+5b)
8x2-(8x2+4x+4)-(7x-1)
9y2-(8x2-y)+(6x2-2y2)
3
(x2+8xy-—x)-(4x2+7xy-9x)
4
48
(—xy-8y2+4)+(x2+—xy+4y2-1)
57
53
(xy+—y-—)+(xy+x+1)
64
(6y-4x-7z2)-(8y-9x-2z2)
(9k2-3k)-(4k2+k+4)
(7a2+8a-8b)+(a2-a-2b)
3x2+(9x2+x+9)+(8x-7)
y2+(9x2+y)-(4x2-5y2)
1
(x2-xy-—x)-(6x2+2xy-6x)
5
71
(—xy+6y2-4)-(x2+—xy-8y2-5)
86
31
(xy+—y+—)+(xy+x-3)
43
(9y+7x-3z2)-(6y-8x+2z2)
(2k2+7k)+(7k2-9k+8)
(8a2-2a-3b)-(a2-4a-6b)
5x2+(2x2-3x+1)+(9x-5)
9y2-(4x2+y)-(2x2+7y2)