七年级数学整式的加减法计算题大全 72.docx
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七年级数学整式的加减法计算题大全72
46
(xy+—y+—)-(xy+x+2)
55
(3y-6x-3z2)-(9y+4x+7z2)
(6m2+3m-4)+(5m-3n-4)
(7x2-7x-2)-8(6x2+9x)
-2(x2-8)+7(x2-2)
-(x2y-4xy-7)-7(x2y-4xy+3)
66
(—x2+15x+13y)-(—x2-10x+20y)
55
11
-—(7k3-2k2-5)-—(6k3+3k2+4k)
23
(6k2+7k)+(3k2+2k+7)
(2a2-5a+b)+(4a2+8a+5b)
9x2-(x2+3x-1)-(5x-5)
2y2+(7x2-y)-(5x2-3y2)
1
(8x2+8xy-—x)-(4x2-9xy+4x)
4
81
(—xy-5y2-1)-(x2+—xy-9y2+3)
77
92
(xy-—y-—)-(xy-x-5)
83
(8y+2x-4z2)+(2y+x-6z2)
(4m2-3m-8)-(9m+3n-9)
(8x2+5x+5)+6(x2-8x)
-5(x2+8)+4(x2+6)
-(x2y-5xy-9)-5(x2y+5xy+3)
35
(—x2+20x+14y)+(—x2-12x+25y)
44
11
-—(4k3-2k2+3)-—(9k3+5k2-3k)
23
(9k2+4k)+(3k2-5k-5)
(2a2-4a+2b)+(a2+3a+7b)
6x2-(4x2+4x-2)-(2x-8)
5y2+(3x2-y)-(2x2-3y2)
4
(3x2+5xy-—x)-(2x2+8xy-5x)
5
78
(—xy-3y2-8)+(x2+—xy-6y2+4)
67
91
(xy+—y+—)+(xy-x+5)
83
(5y-4x+8z2)-(6y+x-6z2)
(9m2+3m-9)+(m-n+2)
(9x2-2x-5)-3(6x2+7x)
-5(x2+2)-2(x2+8)
-(x2y-3xy-8)+6(x2y-6xy+3)
11
(—x2-16x+16y)+(—x2-12x+17y)
77
11
-—(7k3-8k2-6)-—(2k3+k2-6k)
26
(2k2+8k)-(6k2+5k-2)
(a2-8a+2b)+(2a2+8a+9b)
8x2+(6x2-6x+9)-(7x+5)
7y2+(9x2-y)+(8x2-6y2)
4
(6x2-7xy-—x)+(9x2-9xy-6x)
5
21
(—xy-8y2-8)+(x2-—xy+2y2-8)
37
63
(xy+—y-—)+(xy-x-3)
54
(7y-8x+2z2)+(7y-3x+z2)
(3m2-8m+4)+(2m-5n-2)