七年级数学下册整式的加减法计算题 353Word下载.docx
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56
(5y-7x+z2)-(8y-6x+7z2)
(7k2+k)+(5k2-4k+7)
(5a2+4a-b)+(2a2+a-7b)
x2-(8x2-3x+8)+(7x-8)
y2-(8x2+y)+(9x2+9y2)
1
(9x2+6xy-—x)-(x2+4xy+2x)
8
91
(—xy-y2+8)-(x2-—xy-4y2-7)
16
(xy-—y-—)-(xy-x-1)
37
(2y-6x-z2)-(6y-8x+2z2)
(8k2-6k)-(3k2+5k-1)
(6a2-a-8b)-(3a2+a-3b)
4x2+(6x2-2x+9)-(x-7)
7y2-(6x2+y)-(7x2+y2)
(2x2-4xy+—x)+(8x2+9xy+9x)
3
12
(—xy-4y2-2)+(x2+—xy-6y2-5)
63
71
(xy-—y-—)+(xy+x-7)
66
(9y-5x+8z2)+(8y-2x+3z2)
(2k2-k)+(4k2-2k-6)
(3a2-5a+7b)-(5a2+2a-b)
3x2+(4x2-5x-2)+(2x+8)
9y2+(9x2-y)-(7x2+9y2)
(5x2-9xy-—x)-(6x2-9xy+3x)
41
(—xy-y2-9)+(x2+—xy-9y2+4)
57
11
(xy-—y-—)-(xy+x-1)
87
(5y-6x-4z2)-(y-3x-2z2)
(2k2-k)+(k2+3k-2)
(6a2+9a-5b)+(7a2-6a-8b)
6x2-(x2-7x-7)-(x-2)
7y2+(6x2+y)-(2x2+9y2)
2
(4x2+2xy-—x)+(9x2+3xy+6x)
11
(—xy-2y2-7)+(x2+—xy-7y2-1)
86
(xy+—y-—)+(xy-x+2)
85
(7y+4x-2z2)+(y+5x-9z2)
(6k2-k)-(k2-6k-5)
(7a2-4a-4b)+(8a2-7a-3b)
6x2-(5x2+2x-8)+(4x-8)
2y2+(4x2-y)+(x2-6y2)
(7x2-7xy+—x)+(8x2-8xy-3x)
6
16
(—xy+6y2-8)-(x2+—xy-6y2+1)
45
36
(xy-—y-—)+(xy+x-6)
45
(4y+5x-6z2)+(8y+5x-8z2)
(5k2-8k)+(5k2-9k+9)
(8a2-a-5b)-(6a2-a+7b)