七年级数学下册整式的加减法计算题 84.docx
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七年级数学下册整式的加减法计算题84
1
(5x2-8xy+—x)+(8x2+3xy+8x)
3
61
(—xy+9y2+7)-(x2+—xy+5y2+8)
54
71
(xy-—y-—)-(xy-x+7)
63
(8y+5x+z2)+(3y-7x-z2)
(k2-4k)+(3k2+6k+5)
(a2-3a+8b)+(6a2+6a+3b)
x2+(2x2+2x+7)+(x-6)
7y2+(x2-y)+(2x2+9y2)
1
(2x2-9xy+—x)-(2x2+xy-4x)
3
15
(—xy+8y2-5)+(x2-—xy-3y2-7)
36
45
(xy-—y+—)+(xy-x+4)
54
(7y+3x+8z2)-(8y+5x+8z2)
(7k2+2k)+(2k2-9k-5)
(6a2+9a+9b)+(8a2+8a-6b)
3x2+(4x2-2x+8)-(5x+8)
7y2-(3x2+y)+(5x2-y2)
1
(6x2-8xy+—x)-(5x2-xy-2x)
3
14
(—xy+6y2-9)-(x2-—xy-3y2-1)
45
11
(xy-—y-—)-(xy+x+9)
47
(7y+9x+6z2)+(6y-4x+z2)
(2k2+9k)+(4k2+2k+8)
(7a2-7a+7b)+(4a2+2a+2b)
7x2+(3x2-2x-6)+(x+3)
3y2-(9x2+y)-(2x2-2y2)
1
(3x2+5xy+—x)-(4x2+7xy-7x)
4
25
(—xy+4y2-9)-(x2+—xy+7y2-4)
36
11
(xy-—y+—)+(xy-x-4)
87
(5y+4x+9z2)+(8y-3x-2z2)
(4k2-8k)-(2k2+3k+8)
(2a2-5a+8b)+(2a2-a-6b)
x2-(3x2-x+3)+(6x-9)
4y2-(7x2-y)-(4x2-2y2)
1
(6x2+xy-—x)-(4x2-8xy+9x)
7
41
(—xy-7y2+1)-(x2-—xy+4y2-6)
56
11
(xy+—y+—)+(xy+x-5)
74
(2y+5x+5z2)-(y-x-8z2)
(4k2+6k)+(3k2+k+3)
(6a2-9a+3b)-(2a2+9a+7b)
9x2+(x2+5x-1)-(7x-1)
2y2-(4x2+y)+(2x2-y2)
7
(7x2-9xy+—x)+(5x2+6xy-5x)
6
71
(—xy-y2+5)-(x2+—xy-9y2+7)
84
87
(xy+—y-—)+(xy-x-8)
78
(8y+2x+4z2)-(4y+x+7z2)
(2k2-2k)-(2k2+6k-6)