七年级数学整式的加减法计算题大全 519.docx
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七年级数学整式的加减法计算题大全519
3y2+(2x2+y)-(x2+6y2)
7
(3x2-3xy+—x)+(3x2-7xy+9x)
6
41
(—xy-4y2-7)-(x2-—xy+2y2-6)
56
31
(xy+—y+—)-(xy+x-8)
45
(3y+5x+3z2)+(4y-5x+5z2)
(7m2+4m-2)-(9m-4n+2)
(x2-9x+5)+4(5x2-6x)
-3(x2+9)-8(x2+9)
-(x2y+8xy+2)+3(x2y+5xy-7)
17
(—x2-17x+13y)-(—x2+19x+24y)
88
11
-—(9k3-3k2+4)+—(7k3-5k2-7k)
23
(k2-8k)-(3k2-9k+2)
(2a2+9a+2b)+(6a2+8a-4b)
8x2+(2x2+7x-1)+(2x+4)
4y2+(8x2+y)+(8x2+2y2)
5
(2x2+7xy+—x)+(7x2+3xy-8x)
6
18
(—xy-3y2+9)+(x2-—xy-3y2-1)
77
43
(xy-—y+—)+(xy-x-2)
34
(7y-9x+5z2)-(9y+7x+3z2)
(7m2+7m-4)-(4m+7n+8)
(4x2+9x+1)-2(5x2-6x)
-3(x2+9)+3(x2+8)
-(x2y-4xy+7)-2(x2y-5xy+3)
81
(—x2+15x+13y)-(—x2-14x+18y)
77
11
-—(2k3-k2+8)-—(9k3+k2+2k)
65
(4k2+7k)+(3k2+9k+9)
(9a2+7a+7b)-(7a2+5a-2b)
6x2+(8x2+4x-7)+(9x+2)
6y2+(5x2+y)-(6x2-2y2)
7
(8x2+3xy+—x)-(5x2-xy+8x)
6
11
(—xy+5y2+9)-(x2-—xy+7y2+4)
63
14
(xy-—y-—)+(xy-x+7)
83
(4y-2x-8z2)-(7y+5x+3z2)
(6m2-4m+3)+(2m-4n-5)
(7x2-9x-2)-7(6x2-5x)
-4(x2-9)+3(x2+2)
-(x2y-3xy+5)+4(x2y+8xy-3)
81
(—x2-17x-20y)+(—x2-16x+12y)
77
11
-—(4k3-k2+5)+—(3k3-5k2+8k)
43
(k2+4k)+(3k2+9k+5)
(8a2-3a+3b)+(8a2-2a-8b)
x2-(9x2-7x+1)-(7x-8)
7y2+(7x2-y)-(2x2-8y2)
7
(8x2+6xy+—x)+(5x2+8xy+7x)
8
21
(—xy-4y2+2)+(x2-—xy+y2-8)
36