七年级数学整式的加减法计算题大全 345.docx
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七年级数学整式的加减法计算题大全345
11
-—(2k3-2k2-1)+—(8k3-9k2+3k)
64
(2k2+9k)+(k2-7k-3)
(a2+8a-8b)+(4a2-4a+7b)
7x2+(8x2-7x-6)+(4x-2)
6y2-(7x2-y)-(7x2-y2)
1
(6x2-xy+—x)+(2x2-6xy-6x)
7
79
(—xy+8y2-6)+(x2-—xy-2y2+4)
68
14
(xy+—y+—)+(xy+x+8)
35
(y-x-5z2)+(8y-9x-5z2)
(9m2-9m+8)+(5m-9n-5)
(3x2-2x+3)+2(8x2-2x)
-2(x2+4)-8(x2-3)
-(x2y+6xy-7)-9(x2y+7xy+4)
99
(—x2+30x+17y)+(—x2+10x-20y)
88
11
-—(8k3-8k2+8)+—(7k3-2k2-9k)
65
(2k2-8k)+(2k2-9k+1)
(3a2-2a-7b)+(a2-2a+3b)
4x2-(9x2+x-8)-(9x+9)
4y2+(4x2-y)-(8x2-4y2)
1
(4x2+9xy-—x)+(x2+5xy+4x)
3
64
(—xy+4y2-9)-(x2-—xy-4y2+7)
73
42
(xy+—y-—)-(xy-x+7)
53
(7y+6x-6z2)-(5y+x+3z2)
(2m2+m-4)-(8m+9n-4)
(x2+5x-3)-3(3x2+8x)
-3(x2+6)-5(x2-6)
-(x2y-4xy+9)+2(x2y+5xy-6)
16
(—x2+16x-10y)+(—x2-12x-12y)
55
11
-—(5k3-6k2-6)-—(7k3+2k2-3k)
42
(3k2+6k)+(2k2+2k+9)
(9a2+8a+b)+(a2-4a-b)
8x2+(8x2-x-8)-(5x+3)
9y2-(4x2+y)-(x2-8y2)
3
(4x2-5xy-—x)-(4x2+9xy+2x)
4
55
(—xy-3y2+7)+(x2+—xy+5y2+7)
64
15
(xy-—y+—)+(xy+x+2)
56
(2y+2x-8z2)+(y+4x-6z2)
(5m2-6m+8)-(m-8n+4)
(6x2-6x+4)+6(x2+9x)
-4(x2-2)-6(x2+2)
-(x2y-9xy-2)-8(x2y-6xy-9)
13
(—x2-20x+20y)+(—x2+13x-15y)
44
11
-—(k3+9k2+6)-—(3k3-k2-9k)
22
(8k2-8k)-(7k2+2k-4)
(a2-5a+b)+(4a2+8a-5b)