七年级数学下册计算题大全43
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(9k2+8k)-(9k2+7k+9)
(2a2-6a+3b)-( a2+5a-b)
6x2+(7x2+x+5)-( x-1)
3y2+(5x2-y)+(6x2+5y2)
3
(3x2+2xy-—x)+(9x2+3xy+9x)
4
1 1
(—xy-9y2+1)-(x2+—xy+8y2-7) 4 5
5 9
(xy+—y-—)-(xy+x+7)
6 8
(7y+x-4z2)+(5y+5x-5z2)
(6k2+2k)+(5k2-5k-8)
(7a2-7a-5b)-( a2-6a-2b)
2y2-(8x2-y)+(4x2-6y2)
8
(8x2+4xy+—x)+(4x2+8xy+5x)
7
8 9
(—xy+4y2+1)+(x2+—xy-y2+5) 7 8
7 5
(xy-—y+—)-(xy+x-4)
8 6
(2k2+7k)-( k2+5k-2)
(7a2-4a+2b)-(5a2-5a+4b) 5x2+( x2+6x-6)-(3x-9)
4y2-( x2+y)-(4x2-6y2)
1
( x2-2xy+—x)-(6x2+xy+x)
4
4 9
(—xy+7y2+1)-(x2+—xy-4y2-5) 3 8
1 1
(xy-—y-—)+(xy+x+7)
5 6
( y+9x-z2)+(9y+x+9z2)
(2k2+5k)-(3k2-k-1)
( a2-7a+4b)+(2a2-5a+b)
3x2-( x2+2x+6)+(8x+8)
9y2-(7x2+y)-(4x2-5y2)
3
(5x2-4xy+—x)-(9x2-2xy-5x)
4
2 8
(—xy+4y2-8)-(x2-—xy-6y2+8) 3 7
1 1
(xy-—y+—)-(xy+x-6)
8 3
(7y+4x+z2)-(9y-9x+9z2) (8k2+8k)-(2k2+4k+6)
( a2-2a+5b)+(5a2+8a-5b) 7x2+(8x2+3x-8)-(8x-8)
4y2+(6x2+y)-(4x2+7y2)
1
(4x2+xy+—x)+(7x2-3xy+x)
6
1 1
(—xy-4y2-1)-(x2+—xy-2y2-8) 6 5
1 3
(xy+—y-—)-(xy+x+7)
5 4
(5y+6x+9z2)-(8y-6x-8z2)
(4k2+6k)-(6k2+6k+8)
(7a2+9a+9b)-(6a2-5a+9b)
8x2-(3x2-x-6)+(3x+7)
9y2+(7x2-y)+(6x2-y2)
1
(8x2+9xy-—x)-(4x2+xy+4x)
4
1 8
(—xy-6y2-5)-(x2+—xy+y2-9) 3 7
1 8
(xy-—y+—)+(xy-x-8)
4 7
(8y-6x+2z2)-(8y-x+3z2)
(8k2-2k)-(5k2-6k+8)
(5a2+a+4b)+(5a2-a-7b)
7x2+(4x2+4x-3)-(6x+3)
2y2-(4x2-y)-(6x2+4y2)
4
(3x2+2xy+—x)-( x2-7xy-8x)
5
1 1
(—xy-8y2+1)+(x2+—xy-7y2+2) 4 8
1 9
(xy+—y-—)+(xy+x-7)
7 8
(6y-9x-9z2)-(9y+3x+8z2) (9k2+k)-(3k2-4k+2)
(8a2+6a-b)+( a2+9a-4b) 4x2-(8x2-9x-2)+(5x+1)
4y2+( x2-y)+(2x2-5y2)
5
(8x2-2xy+—x)-(6x2+4xy+2x)
6
1 7
(—xy+4y2+4)+(x2+—xy-3y2-4) 5 8
1 4
(xy-—y-—)+(xy-x+4)
5 3
(5y-3x-5z2)+(5y-5x-3z2)
(3k2+3k)-(4k2-4k-1)
(8a2-a+b)-(2a2-4a+8b)
x2-(8x2-8x+9)-(3x+5)
7y2+(7x2+y)+(5x2-6y2)
1
(9x2+8xy-—x)+(8x2-7xy+6x)
5
1 4
(—xy+6y2-1)+(x2-—xy-5y2-4) 7 5
1 6
(xy+—y-—)-(xy+x+3)
8 5
(7y+x+6z2)+(7y-9x+5z2) (8k2-9k)+(7k2-k+4)
(6a2+7a-6b)-(5a2-8a-9b) 8x2-(5x2-9x+1)+(7x+6)
6y2-( x2-y)-(2x2+y2)
8
(7x2+xy-—x)-(6x2-2xy+x)
7
8 1
(—xy-3y2+9)-(x2-—xy-4y2+7) 7 4
8 1
(xy+—y-—)+(xy-x+5)
7 6
(2y-2x+3z2)+(9y+7x+5z2)