七年级数学整式的加减法计算题大全 207.docx
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七年级数学整式的加减法计算题大全207
54
(—xy-7y2-7)-(x2+—xy+9y2-9)
65
71
(xy-—y-—)-(xy+x-7)
66
(8y+9x+4z2)+(8y-6x-8z2)
(7m2-4m-2)+(m+3n-1)
(3x2+x-7)+3(9x2+5x)
-5(x2+4)+2(x2+9)
-(x2y-5xy+6)-8(x2y+9xy+5)
41
(—x2+24x-15y)-(—x2-20x+23y)
55
11
-—(2k3+2k2+3)+—(5k3-4k2+6k)
62
(5k2-6k)-(4k2-4k-4)
(5a2+5a+5b)-(6a2+8a+9b)
6x2-(2x2-8x-8)-(9x-2)
5y2-(7x2-y)+(5x2-2y2)
3
(x2+8xy-—x)+(2x2-9xy+8x)
4
25
(—xy-3y2+7)-(x2-—xy-3y2+4)
34
17
(xy+—y+—)-(xy+x+8)
78
(6y-x-5z2)-(8y-4x-6z2)
(9m2+9m-7)+(9m+n+6)
(9x2+2x+6)+5(9x2+8x)
-5(x2-1)+2(x2+9)
-(x2y+4xy-5)-7(x2y+5xy-3)
11
(—x2+15x+11y)-(—x2-16x+21y)
88
11
-—(9k3-k2-5)+—(5k3-7k2-5k)
43
(5k2+4k)+(k2+3k-4)
(a2-4a+6b)-(9a2-2a-b)
6x2-(3x2-9x-2)-(8x-7)
7y2+(5x2+y)-(4x2-5y2)
9
(5x2+4xy+—x)+(3x2+2xy-8x)
8
11
(—xy+7y2+5)+(x2+—xy+9y2+5)
58
72
(xy+—y-—)+(xy+x+8)
63
(5y-6x-2z2)-(4y-3x+7z2)
(8m2-4m-7)-(5m+3n-2)
(2x2-2x+6)-2(x2+7x)
-5(x2-3)-7(x2+3)
-(x2y-4xy-8)+4(x2y+4xy-3)
86
(—x2+15x+17y)-(—x2-10x+12y)
77
11
-—(4k3-k2+9)+—(8k3+7k2-4k)
42
(8k2-6k)+(8k2+2k-2)
(2a2+7a+9b)-(9a2+4a-8b)
4x2-(9x2-x+8)+(5x+7)
6y2+(7x2-y)+(x2-8y2)
1
(4x2+7xy+—x)+(4x2-xy+4x)
3
15
(—xy-8y2+8)-(x2+—xy+2y2+6)
84
81
(xy+—y+—)+(xy+x+3)
74
(3y+4x+8z2)-(2y+8x+2z2)