七年级数学下册整式的加减法计算题 643.docx
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七年级数学下册整式的加减法计算题643
(y+4x+3z2)-(4y+x+z2)
(3k2+9k)-(4k2+6k-3)
(a2+8a-7b)-(5a2-7a-2b)
2x2+(7x2+4x-1)+(4x+2)
2y2-(5x2-y)+(6x2+7y2)
1
(4x2+6xy-—x)+(5x2+5xy+6x)
5
31
(—xy-5y2-8)-(x2+—xy-5y2-8)
43
31
(xy-—y-—)+(xy+x+6)
45
(2y-5x+3z2)+(7y+3x+9z2)
(5k2+9k)+(4k2-6k-6)
(8a2-4a+4b)+(4a2-8a-8b)
5x2+(9x2-2x-9)-(7x+8)
5y2+(2x2-y)+(6x2-y2)
4
(3x2+5xy-—x)+(x2+3xy+2x)
5
11
(—xy+8y2-3)+(x2+—xy+8y2-8)
48
56
(xy+—y-—)+(xy+x+3)
45
(2y+7x-z2)+(3y+4x+7z2)
(5k2-6k)-(7k2-8k-3)
(8a2-a+2b)+(a2+a+9b)
4x2+(5x2-8x+9)+(5x-5)
2y2-(5x2-y)+(6x2-y2)
6
(8x2+8xy-—x)+(3x2+7xy-5x)
5
16
(—xy+y2-7)-(x2+—xy-7y2+4)
35
67
(xy+—y-—)-(xy-x+6)
56
(7y+5x-9z2)-(5y-9x+z2)
(7k2+6k)-(5k2-7k+4)
(4a2+4a-b)+(9a2-9a-7b)
8x2-(5x2-7x+7)-(2x+8)
2y2+(9x2+y)+(5x2-6y2)
7
(4x2-3xy+—x)+(7x2-6xy-7x)
8
94
(—xy-5y2-1)+(x2-—xy+7y2+3)
83
11
(xy-—y-—)-(xy+x+4)
87
(6y+5x+3z2)+(4y+3x+5z2)
(7k2-k)+(3k2-3k+8)
(9a2+7a-3b)-(3a2+3a+6b)
9x2+(8x2-2x+1)-(3x+2)
9y2-(4x2-y)-(9x2+6y2)
9
(2x2-3xy-—x)+(7x2-3xy+9x)
8
44
(—xy-6y2-8)-(x2+—xy-4y2+5)
33
11
(xy-—y-—)-(xy+x-1)
85
(6y+3x-9z2)+(4y+4x-z2)
(2k2+6k)-(4k2-9k-8)
(7a2-7a-3b)+(4a2-3a-b)
2x2-(3x2+6x+8)+(9x+9)
4y2-(9x2+y)+(2x2+y2)