北师大版七年级数学下册整式的加减法计算题精选 297.docx
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北师大版七年级数学下册整式的加减法计算题精选297
16
(—xy-5y2-9)+(x2-—xy-7y2+4)
47
61
(xy+—y+—)+(xy+x-5)
55
(y-7x+5z2)-(5y-3x-z2)
(k2-9k)-(3k2+k+3)
(2a2-9a+b)-(2a2+6a-b)
7x2+(5x2-7x-2)+(5x-5)
7y2-(6x2-y)-(7x2-8y2)
1
(9x2-8xy-—x)+(6x2+5xy-5x)
5
45
(—xy-y2+6)+(x2+—xy-9y2+2)
54
91
(xy+—y-—)-(xy+x-2)
87
(9y-8x+9z2)-(7y-3x-9z2)
(8k2-k)+(k2+2k+2)
(a2-5a+b)+(7a2+5a+9b)
5x2+(9x2-9x-7)+(9x+3)
8y2-(9x2-y)-(6x2-8y2)
9
(7x2-2xy+—x)-(5x2-2xy-9x)
8
91
(—xy-5y2-2)-(x2+—xy-y2+2)
85
11
(xy+—y-—)+(xy-x+7)
56
(5y-3x-9z2)-(6y-4x+4z2)
(3k2+8k)+(6k2+6k-2)
(2a2+8a-7b)-(a2-4a+4b)
2x2+(4x2+5x+3)+(x-9)
4y2+(x2+y)+(9x2-y2)
1
(x2+9xy-—x)+(2x2+3xy-5x)
7
61
(—xy-9y2+5)-(x2-—xy-9y2+2)
76
11
(xy+—y+—)-(xy-x-3)
66
(7y-8x-6z2)-(3y+2x+6z2)
(4k2-7k)+(4k2+2k+6)
(6a2+5a-7b)+(a2+8a+2b)
5x2+(7x2-x+6)+(8x+5)
y2+(9x2-y)+(7x2+2y2)
7
(8x2+9xy+—x)-(x2-6xy+6x)
8
18
(—xy-8y2-3)-(x2-—xy+9y2-2)
37
45
(xy+—y-—)-(xy+x-2)
54
(9y+8x-8z2)+(6y-9x+6z2)
(7k2-5k)+(k2+k-2)
(6a2+4a+8b)+(6a2-a+b)
5x2+(9x2-3x-5)-(9x-1)
9y2-(3x2+y)+(3x2+5y2)
1
(2x2+7xy+—x)-(2x2+xy+3x)
5
91
(—xy+5y2-1)+(x2-—xy-y2+6)
86
75
(xy+—y-—)-(xy-x+4)
64
(5y+4x+z2)-(5y+7x+8z2)
(9k2-8k)+(5k2+3k+1)
(3a2-2a+7b)-(8a2+9a-7b)