七年级数学下册整式的加减法练习题精选强烈推荐 111.docx
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七年级数学下册整式的加减法练习题精选强烈推荐111
-(x2y+7xy+7)-4(x2y-4xy-3)
15
(—x2+10x+14y)+(—x2+10x-30y)
44
11
-—(7k3+5k2-4)-—(3k3+7k2+7k)
43
(2k2-9k)+(7k2-7k+6)
(6a2-7a+3b)+(3a2+4a+2b)
5x2+(3x2+4x+1)-(4x+3)
3y2+(3x2-y)-(9x2+8y2)
8
(x2+6xy-—x)-(x2+6xy+6x)
7
11
(—xy+4y2+1)+(x2+—xy+9y2+2)
83
11
(xy+—y+—)+(xy-x+2)
54
(9y+6x-4z2)+(2y-7x-2z2)
(5m2-6m+7)-(4m+n+9)
(6x2+2x-6)-2(9x2+2x)
-3(x2-6)+5(x2-4)
-(x2y-5xy+9)-7(x2y-9xy+7)
71
(—x2-27x-16y)-(—x2-19x+19y)
66
11
-—(8k3-3k2-5)-—(5k3+7k2-7k)
44
(2k2+k)+(5k2+5k+9)
(8a2-3a-b)+(7a2+7a-5b)
2x2-(2x2-9x+8)-(7x-7)
9y2+(5x2-y)+(6x2-4y2)
4
(2x2+8xy-—x)-(9x2+3xy-9x)
3
11
(—xy-5y2+4)-(x2+—xy-9y2-2)
36
16
(xy-—y+—)-(xy-x-9)
37
(y+7x+2z2)-(5y+x+9z2)
(4m2-5m-3)-(5m+9n-6)
(9x2+4x+5)+2(x2-3x)
-9(x2+7)-4(x2+5)
-(x2y-2xy-2)+7(x2y-5xy-3)
21
(—x2-20x-13y)+(—x2-11x+17y)
33
11
-—(7k3+k2-4)+—(3k3+9k2-1k)
66
(3k2+7k)+(4k2+6k+7)
(9a2-2a+2b)+(6a2-7a+2b)
9x2-(7x2+6x-3)-(x-2)
9y2-(3x2+y)-(6x2-y2)
1
(7x2+5xy+—x)+(6x2+8xy-7x)
3
14
(—xy-4y2-4)+(x2+—xy+5y2-9)
53
62
(xy+—y-—)-(xy-x+5)
53
(6y+2x+9z2)-(y+2x-5z2)
(4m2-5m+6)+(6m+4n-5)
(7x2+8x-8)-9(5x2+2x)
-5(x2+2)+8(x2+8)
-(x2y-6xy+4)+2(x2y-9xy-2)
22
(—x2-23x+12y)-(—x2-12x-24y)
33
11
-—(8k3-7k2-1)-—(9k3+3k2-4k)
64