七年级数学下册计算题大全78.docx
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七年级数学下册计算题大全78
3
(8x2+xy-—x)+(x2-8xy+5x)
4
81
(—xy+3y2+4)-(x2+—xy-6y2-7)
75
65
(xy-—y-—)+(xy+x+5)
76
(4y+5x-2z2)+(2y-x+2z2)
(2k2-4k)+(7k2+9k+5)
(3a2+4a+b)+(a2-9a-b)
8x2-(7x2+6x+5)+(4x-9)
3y2+(6x2+y)-(9x2+9y2)
7
(6x2+9xy-—x)+(5x2+4xy+8x)
8
16
(—xy-y2-4)-(x2-—xy+2y2+9)
77
17
(xy-—y-—)-(xy-x+9)
76
(8y-8x+8z2)+(2y-5x+9z2)
(8k2-k)-(k2-6k+9)
(2a2-9a+4b)-(6a2+9a-2b)
4x2-(9x2-9x-5)+(3x+4)
y2-(6x2+y)+(7x2+y2)
1
(x2+3xy-—x)+(4x2-3xy+2x)
8
12
(—xy-9y2-1)+(x2+—xy-3y2-5)
33
12
(xy+—y-—)-(xy+x+8)
53
(4y-3x+2z2)+(y+7x-9z2)
(2k2-7k)-(8k2-7k+1)
(a2-3a+3b)-(2a2+6a-5b)
3x2-(4x2-5x-9)-(2x+7)
7y2-(x2+y)+(2x2-6y2)
7
(8x2-4xy+—x)-(5x2+7xy-9x)
8
16
(—xy-7y2+7)-(x2+—xy-6y2+3)
57
24
(xy+—y+—)+(xy-x-1)
33
(6y-3x+6z2)-(6y+x-z2)
(3k2+4k)+(8k2+3k-6)
(8a2+5a+7b)+(a2+2a-6b)
3x2+(5x2+9x+4)-(7x-5)
3y2+(4x2+y)-(3x2+9y2)
1
(x2+4xy-—x)+(8x2+xy+4x)
3
48
(—xy+3y2-4)-(x2-—xy+4y2-5)
37
11
(xy+—y+—)+(xy+x+6)
53
(9y-8x-6z2)+(7y-4x+3z2)
(6k2+k)-(5k2-8k-5)
(7a2-9a-6b)-(7a2+2a-4b)
8x2+(5x2-8x-9)-(7x+1)
7y2+(6x2-y)+(3x2-6y2)
4
(6x2-xy+—x)+(7x2+5xy+3x)
5
59
(—xy+6y2+6)+(x2-—xy-3y2+5)
48
62
(xy+—y+—)-(xy+x+2)
53
(6y+6x-2z2)-(3y+8x-4z2)
(2k2-7k)+(2k2+7k+6)
(3a2-7a-5b)-(9a2+5a-5b)
x2+(3x2-x-1)+(4x+9)
2y2+(4x2-y)+(6x2-y2)
1
(7x2+2xy-—x)+(6x2-xy-2x)
3
71
(—xy-7y2+7)-(x2+—xy-4y2-9)
84
14
(xy-—y-—)+(xy+x-9)
33
(5y-x-7z2)+(9y-4x-9z2)
(7k2+5k)-(k2-3k+3)
(8a2-2a+4b)+(5a2+7a+9b)
3x2+(6x2-2x+8)-(3x+9)
5y2-(4x2+y)-(3x2-5y2)
4
(3x2+4xy+—x)-(7x2-9xy-3x)
3
75
(—xy+6y2+8)+(x2+—xy+y2+4)
86
51
(xy+—y+—)-(xy+x-4)
46
(7y+4x+4z2)+(6y+7x-8z2)
(7k2+9k)-(k2-2k+3)
(6a2+6a-4b)+(2a2-3a-8b)
x2+(3x2-5x+2)+(6x+4)
7y2+(2x2+y)-(x2+9y2)
1
(4x2-5xy+—x)+(3x2-xy-9x)
5
97
(—xy-4y2+7)-(x2-—xy-y2-7)
86
93
(xy+—y-—)-(xy-x+3)
84
(4y-7x+9z2)-(6y-9x+7z2)
(k2-k)+(5k2+4k-3)
(4a2+7a-b)-(a2+5a+b)
6x2+(4x2+9x+9)+(9x+3)
9y2+(3x2-y)+(6x2-3y2)
5
(3x2+xy+—x)+(x2-3xy-7x)
4
14
(—xy-8y2-7)+(x2-—xy+5y2+3)
43
34
(xy-—y+—)-(xy+x-4)
45
(9y+5x+6z2)-(3y-2x+9z2)
(8k2-4k)+(4k2-5k-4)
(5a2+5a-4b)-(8a2+9a-7b)
8x2-(7x2-7x-1)-(6x+7)
4y2-(6x2-y)-(3x2-8y2)
2
(3x2-7xy-—x)+(7x2-7xy-6x)
3
66
(—xy-4y2+5)+(x2+—xy+5y2-3)
75
15
(xy-—y+—)+(xy-x-4)
86
(y-4x-4z2)-(2y-4x+4z2)
(3k2-6k)-(k2+9k+1)
(6a2-a+9b)+(4a2-9a+6b)
9x2+(9x2-7x+7)+(7x-4)
8y2+(2x2-y)+(6x2-4y2)
1
(3x2+8xy+—x)+(x2-3xy-4x)
5
36
(—xy-8y2-6)+(x2-—xy-5y2-5)
45
64
(xy+—y+—)+(xy+x-5)
55
(9y-3x+z2)+(6y+6x+z2)
(2k2-6k)-(7k2-2k+2)
(8a2+3a+8b)+(6a2-5a-7b)
5x2+(5x2+8x+2)-(7x+6)
9y2+(7x2-y)-(7x2-9y2)
2
(5x2+6xy-—x)-(2x2-5xy+9x)
3
17
(—xy-2y2+5)-(x2-—xy+5y2-3)
88
32
(xy-—y-—)-(xy-x-6)
43
(4y+9x+4z2)+(2y+x-4z2)