七年级数学下册整式的加减法计算题 274.docx
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七年级数学下册整式的加减法计算题274
7x2-(4x2-6x+3)+(3x-4)
6y2-(4x2-y)+(5x2+3y2)
8
(6x2+7xy+—x)-(2x2-9xy+7x)
7
19
(—xy+2y2-6)+(x2+—xy+8y2+6)
48
54
(xy-—y+—)+(xy+x-5)
65
(y+2x-9z2)-(7y+5x-9z2)
(2k2-2k)-(k2+5k-7)
(6a2-8a-b)+(4a2-5a-9b)
9x2+(5x2+x+8)+(8x-2)
7y2+(2x2-y)-(3x2+6y2)
7
(6x2+2xy-—x)-(5x2+xy+5x)
8
11
(—xy+y2+8)-(x2-—xy+8y2+9)
73
61
(xy-—y-—)+(xy-x-6)
55
(8y+5x-3z2)-(2y-3x+6z2)
(9k2-5k)+(3k2-6k+1)
(4a2-4a-4b)-(3a2+7a+9b)
4x2-(9x2+3x-4)-(6x+8)
2y2-(2x2+y)-(x2-2y2)
5
(9x2+6xy+—x)-(x2-5xy-x)
4
56
(—xy-8y2+2)-(x2+—xy+6y2-9)
65
51
(xy-—y-—)-(xy+x+2)
68
(7y+4x+z2)+(6y+7x+9z2)
(2k2+5k)-(9k2-k+3)
(9a2-2a+6b)-(4a2+9a+5b)
6x2-(9x2-3x+6)+(9x-8)
6y2-(7x2-y)+(2x2-4y2)
1
(x2+9xy+—x)+(8x2-8xy-x)
5
71
(—xy-2y2+4)+(x2-—xy-9y2-8)
83
63
(xy+—y-—)-(xy-x+1)
54
(2y+2x+8z2)-(6y-4x-5z2)
(6k2-9k)-(3k2-2k-4)
(6a2-9a+3b)+(a2-7a-2b)
3x2+(8x2-2x-5)-(3x+9)
6y2+(5x2-y)-(9x2+6y2)
3
(7x2-xy-—x)+(7x2-xy-6x)
4
34
(—xy+5y2-4)-(x2-—xy+6y2+7)
43
16
(xy-—y-—)-(xy-x+7)
75
(3y+4x-3z2)+(7y-3x+3z2)
(6k2+7k)+(2k2-6k+2)
(7a2-9a-8b)-(5a2+5a+6b)
7x2-(6x2+9x+1)-(6x-9)
y2-(7x2+y)+(7x2+8y2)
1
(7x2+7xy+—x)-(6x2-9xy+9x)
3
16
(—xy-4y2+1)+(x2-—xy+2y2+3)
35
47
(xy+—y-—)+(xy-x-3)
56