七年级数学下册整式的加减法计算题 228.docx
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七年级数学下册整式的加减法计算题228
5
(7x2+3xy-—x)+(6x2-4xy+5x)
4
51
(—xy+7y2-1)+(x2+—xy-9y2+3)
63
71
(xy+—y+—)+(xy-x+4)
68
(8y-4x-6z2)-(7y-x+7z2)
(9k2+2k)-(8k2-9k+1)
(5a2-8a-2b)-(4a2-8a+b)
9x2+(4x2-6x-2)-(6x-7)
9y2+(5x2-y)+(8x2-3y2)
1
(8x2-2xy+—x)+(8x2+2xy-4x)
4
51
(—xy-6y2+8)-(x2-—xy+6y2+7)
66
41
(xy+—y+—)+(xy+x-3)
38
(y+2x+2z2)-(2y-2x+8z2)
(9k2-2k)+(7k2-7k-7)
(6a2-8a-8b)-(6a2+a-7b)
5x2+(6x2+7x-9)-(4x+9)
2y2-(8x2-y)+(7x2+y2)
9
(3x2-2xy-—x)-(5x2-4xy+4x)
8
76
(—xy+y2+1)-(x2+—xy+5y2-3)
65
11
(xy-—y+—)+(xy+x+4)
65
(4y-2x-2z2)+(5y-3x-z2)
(2k2-2k)-(5k2+k-7)
(5a2-4a+4b)+(4a2-6a+b)
6x2-(3x2-9x-6)-(6x+4)
6y2-(7x2+y)-(3x2-9y2)
1
(3x2+8xy-—x)+(2x2-9xy+6x)
5
18
(—xy-7y2-9)+(x2-—xy+2y2+9)
37
71
(xy-—y+—)+(xy+x+6)
83
(5y-4x-8z2)-(8y-7x-6z2)
(k2+5k)-(2k2-8k+2)
(5a2+3a+7b)+(4a2-2a+b)
x2+(7x2-9x-8)-(8x+1)
9y2-(3x2-y)-(7x2-y2)
9
(5x2+9xy+—x)-(5x2-3xy+7x)
8
61
(—xy+9y2-6)-(x2+—xy+6y2-9)
73
51
(xy-—y+—)-(xy+x+9)
66
(9y+9x+2z2)+(3y+x+5z2)
(5k2+3k)-(8k2-2k-9)
(5a2-5a-6b)+(9a2-2a+4b)
6x2-(9x2+7x+3)+(x+5)
y2-(7x2+y)-(5x2-6y2)
1
(5x2-8xy+—x)+(9x2+6xy+2x)
8
93
(—xy+2y2+5)+(x2-—xy+3y2+9)
84
51
(xy-—y+—)+(xy+x-6)
44
(8y-5x-5z2)+(9y-8x-z2)
(4k2-k)-(k2+8k+5)