七年级数学下册整式的加减法计算题 618.docx
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七年级数学下册整式的加减法计算题618
2x2+(x2+x-3)+(3x+4)
4y2+(5x2-y)+(6x2-9y2)
1
(5x2+8xy+—x)+(6x2+5xy+3x)
5
11
(—xy-4y2-6)-(x2-—xy-6y2+9)
84
51
(xy-—y-—)+(xy+x+1)
64
(y-7x-3z2)-(4y+2x-5z2)
(k2-5k)+(5k2+8k+1)
(2a2-4a+9b)-(2a2+6a+6b)
x2-(4x2+8x-5)+(3x+8)
8y2+(6x2+y)-(3x2+6y2)
4
(3x2+3xy+—x)-(6x2-8xy+8x)
5
61
(—xy-2y2+8)-(x2-—xy-y2+5)
53
18
(xy-—y-—)-(xy+x+7)
57
(8y+9x-7z2)-(3y+4x-6z2)
(6k2-4k)-(7k2+6k-7)
(2a2-3a+5b)-(a2+7a-6b)
5x2+(4x2-5x-7)-(4x+6)
5y2-(x2-y)+(5x2-8y2)
6
(x2+xy+—x)+(9x2+4xy-7x)
7
61
(—xy+8y2-7)+(x2-—xy+6y2+6)
56
71
(xy-—y+—)+(xy-x+8)
88
(2y-4x-4z2)-(6y-8x-6z2)
(7k2+7k)+(k2-3k+9)
(2a2+6a+2b)-(9a2+8a-b)
3x2+(8x2+4x+1)-(9x+2)
9y2+(3x2-y)+(8x2+7y2)
1
(5x2+9xy+—x)-(6x2-6xy-6x)
3
59
(—xy+2y2-4)+(x2-—xy+7y2-4)
68
11
(xy-—y-—)-(xy+x+6)
85
(5y+2x-5z2)+(8y+9x-9z2)
(9k2+k)-(2k2-8k+1)
(8a2-6a-2b)+(4a2+3a+5b)
2x2-(2x2-4x-2)-(5x+8)
2y2-(2x2-y)+(8x2-y2)
1
(5x2+7xy+—x)+(2x2+2xy-6x)
4
71
(—xy-y2+1)-(x2-—xy-3y2+1)
66
11
(xy-—y-—)+(xy-x+1)
66
(7y-8x-8z2)-(4y+2x+9z2)
(k2-4k)+(7k2+6k-2)
(2a2-9a+7b)+(3a2-2a-8b)
9x2+(x2-2x-9)+(5x-7)
7y2+(5x2-y)+(3x2+2y2)
1
(6x2+3xy-—x)-(3x2+9xy-x)
3
31
(—xy+9y2+4)+(x2-—xy-7y2-8)
48
13
(xy+—y+—)+(xy+x+3)
44