七年级数学下册计算题大全150
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4
(9x2-5xy-—x)+(4x2+3xy-7x)
5
1 1
(—xy-y2+7)-(x2-—xy+6y2+4) 4 7
3 1
(xy+—y-—)+(xy+x+2)
4 7
(4y+5x-z2)-(7y-7x+5z2)
(3k2-7k)+(5k2+3k-4)
( a2-5a+6b)-(2a2+a+5b)
3x2+(8x2-8x-6)+( x+9)
7y2+(7x2-y)-(4x2-5y2)
4
(9x2+5xy+—x)-(8x2-7xy+8x)
5
1 2
(—xy+5y2-8)+(x2-—xy+3y2+2) 5 3
1 1
(xy+—y+—)+(xy+x-1)
4 4
(6y+7x-6z2)+(8y+6x-4z2) (8k2-7k)-(7k2-k-9)
( a2-7a+9b)+(9a2+4a+8b) 9x2+( x2+3x+1)+(7x-1)
8y2-(3x2+y)-(8x2+4y2)
1
(3x2-7xy+—x)-(3x2+8xy-5x)
4
5 5
(—xy+4y2-7)+(x2-—xy-4y2-2) 6 4
1 1
(xy+—y+—)-(xy-x-1)
7 7
(9y+7x-6z2)-( y+9x+9z2)
(8k2+6k)-(5k2-9k+7)
(3a2-8a-5b)-(7a2+6a+4b)
4x2+(2x2+8x-9)-(2x+6)
4y2+(3x2+y)+(9x2-y2)
4
(2x2-7xy-—x)-(3x2+3xy-x)
5
1 1
(—xy-4y2+7)-(x2-—xy-6y2-3) 4 6
5 2
(xy-—y+—)-(xy-x+4)
4 3
(2y+5x+3z2)+(4y+5x+7z2)
(8k2+5k)-(7k2+k-2)
( a2+7a+b)+(9a2-9a+7b)
7x2+( x2-2x+4)-(9x+6)
y2+(2x2-y)+(8x2+y2)
7
(2x2+8xy+—x)-(5x2-5xy+7x)
6
1 3
(—xy+7y2-5)-(x2+—xy+9y2-5) 3 4
1 9
(xy-—y+—)-(xy-x-5)
5 8
( y+2x+5z2)+( y-3x+8z2) (4k2-6k)-(8k2-9k+4) ( a2+6a-b)-(7a2+6a+8b) 9x2+(6x2-x-9)-(2x-7) 8y2-(5x2+y)-(8x2-y2)
4
(8x2+3xy-—x)-(9x2+8xy-x)
5
7 1
(—xy+9y2+6)-(x2-—xy-9y2+6) 8 6
4 2
(xy-—y-—)-(xy+x-8)
3 3
(8y+4x+2z2)-(6y-9x-z2)
(6k2+8k)+(6k2+9k+8)
(4a2+a-2b)+(5a2-6a+2b)
8x2-(2x2+7x+5)+(7x-8)
3y2-(2x2+y)+(6x2+5y2)
6
(3x2+8xy-—x)+(5x2+9xy-4x)
7
6 1
(—xy+2y2+2)-(x2-—xy+8y2-4) 5 8
7 1
(xy+—y+—)+(xy-x-3)
6 3
(2y-3x-z2)+(5y-9x-3z2) (9k2+6k)+(6k2+k-8)
(3a2+5a-8b)-(3a2+6a-8b) 2x2+(6x2+8x-1)-(9x-7)
2y2-(3x2-y)+(5x2+6y2)
1
(7x2+xy-—x)-(7x2+6xy+7x)
5
5 8
(—xy+4y2+8)-(x2+—xy+2y2+3) 6 7
8 1
(xy-—y-—)-(xy-x+8)
7 6
(2y+x-2z2)+(4y-2x+3z2)
(9k2+k)+(2k2+2k-5)
(4a2-4a-2b)+(2a2+7a+7b)
4x2+(9x2-4x-9)+(3x-5)
7y2+(2x2+y)-(9x2-7y2)
1
(5x2+5xy+—x)-(6x2-3xy-5x)
7
1 4
(—xy-4y2-1)-(x2+—xy+7y2+1) 7 5
6 6
(xy+—y+—)+(xy-x+1)
5 5
(9y-5x-2z2)-(3y-7x-4z2)
(2k2-k)-(3k2-2k-3)
(4a2+a+8b)-(3a2+3a-5b)
x2-(8x2-2x+1)+(6x-1)
7y2+(2x2+y)+(9x2-5y2)
6
(2x2+8xy-—x)-(9x2+xy-3x)
7
6 1
(—xy+2y2+5)+(x2-—xy+8y2+7) 5 6
1 4
(xy-—y-—)-(xy-x+7)
4 5