七年级数学整式的加减法计算题大全 18.docx
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七年级数学整式的加减法计算题大全18
41
(—x2-12x+14y)-(—x2-20x-24y)
33
11
-—(9k3+5k2+3)+—(9k3-6k2-8k)
63
(4k2+4k)-(4k2+9k-6)
(5a2-6a-b)+(a2-4a+9b)
6x2+(7x2-5x+5)-(8x-6)
6y2-(7x2-y)-(2x2-5y2)
6
(5x2-xy-—x)+(2x2-7xy+8x)
5
31
(—xy-4y2+3)+(x2-—xy-7y2-5)
45
11
(xy+—y+—)-(xy-x-5)
57
(8y+7x-4z2)+(4y+x-8z2)
(8m2-4m+6)+(4m+6n+1)
(8x2+7x-8)-7(6x2-8x)
-3(x2-6)-4(x2+6)
-(x2y+4xy+9)-3(x2y+6xy-8)
11
(—x2+18x+14y)-(—x2-13x-16y)
33
11
-—(9k3+4k2+6)+—(3k3-5k2-2k)
46
(6k2-3k)-(6k2+8k-9)
(3a2+7a-9b)-(9a2-a-4b)
3x2+(9x2+4x+2)+(2x+9)
2y2-(2x2-y)-(6x2+9y2)
4
(5x2-3xy+—x)-(7x2-xy+4x)
3
84
(—xy-5y2-2)+(x2-—xy-y2+4)
75
71
(xy-—y-—)+(xy-x-2)
67
(4y+x+6z2)+(9y-2x+8z2)
(m2-3m+5)+(4m+8n-3)
(x2+5x-9)+4(6x2+6x)
-7(x2+8)-9(x2-7)
-(x2y-6xy-2)-5(x2y-3xy+5)
11
(—x2+30x+11y)+(—x2-15x+30y)
44
11
-—(6k3+7k2-7)-—(3k3+k2+8k)
24
(4k2+8k)-(k2+2k+5)
(3a2+3a+b)-(9a2+5a+3b)
8x2-(4x2-9x+5)-(7x-8)
y2+(8x2+y)+(8x2-y2)
5
(5x2-9xy-—x)-(8x2+8xy+7x)
6
21
(—xy+7y2-2)-(x2+—xy+4y2-6)
38
18
(xy-—y-—)+(xy-x-4)
57
(8y-5x-9z2)-(4y-4x+4z2)
(8m2+2m+8)-(4m-7n+2)
(6x2+x-8)+7(6x2-9x)
-4(x2+7)+8(x2-9)
-(x2y-2xy-2)-7(x2y-8xy+7)
66
(—x2+18x-20y)+(—x2+13x-14y)
55
11
-—(4k3+6k2+9)-—(8k3-8k2+8k)
42
(k2+9k)+(5k2+9k-9)