七年级数学下册整式的加减法练习题精选强烈推荐 300.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300
7
(9x2+3xy-—x)+(9x2-5xy+6x)
6
31
(—xy+5y2+1)+(x2+—xy-y2+7)
45
61
(xy+—y-—)-(xy+x+3)
54
(6y+x-z2)-(7y-9x-2z2)
(5m2+9m-6)-(9m-7n+8)
(3x2+2x-6)-9(3x2+7x)
-6(x2+8)-4(x2+3)
-(x2y+2xy-2)-8(x2y-5xy+4)
41
(—x2-25x+17y)+(—x2-14x-19y)
33
11
-—(8k3+5k2+7)+—(6k3+3k2-2k)
65
(3k2+7k)-(9k2-6k-3)
(4a2+9a-4b)+(4a2+6a-2b)
7x2-(5x2+9x-3)+(x+5)
7y2+(6x2+y)-(8x2+4y2)
6
(9x2+7xy-—x)+(2x2+3xy-8x)
5
72
(—xy-9y2+4)+(x2+—xy+6y2-5)
63
17
(xy+—y+—)+(xy-x-8)
46
(9y-9x+5z2)+(2y-4x-3z2)
(2m2+5m-4)+(8m+7n-2)
(8x2-6x-7)-2(9x2-5x)
-7(x2-7)-3(x2-2)
-(x2y+6xy-5)-2(x2y-2xy-3)
51
(—x2+16x-12y)-(—x2-19x-28y)
44
11
-—(3k3+8k2+8)+—(6k3-8k2+4k)
25
(k2-4k)-(9k2+8k-6)
(7a2-9a-8b)+(2a2+7a-5b)
8x2+(2x2+6x-8)+(2x+8)
4y2+(8x2+y)+(2x2-7y2)
3
(3x2-5xy+—x)+(8x2-5xy+4x)
4
21
(—xy-2y2-7)+(x2+—xy-7y2+2)
36
94
(xy-—y-—)+(xy+x-6)
85
(4y+9x+4z2)+(8y+8x-3z2)
(8m2+5m-9)-(9m-3n+8)
(8x2-x-5)-6(9x2-8x)
-5(x2-8)+6(x2-5)
-(x2y+2xy-6)-9(x2y+5xy+3)
11
(—x2+22x-10y)-(—x2+10x-10y)
33
11
-—(7k3-9k2-5)-—(8k3+7k2+3k)
63
(k2-2k)-(4k2-6k+7)
(7a2+5a+4b)+(9a2-9a-b)
5x2-(x2-8x+9)-(4x-1)
y2-(3x2-y)+(5x2-8y2)
2
(x2-5xy-—x)+(9x2-3xy-2x)
3
44
(—xy-6y2+5)+(x2+—xy+9y2-5)
53
31
(xy-—y+—)+(xy+x+6)
48