七年级数学整式的加减法计算题大全 189.docx
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七年级数学整式的加减法计算题大全189
(4y+3x+z2)+(5y-5x+4z2)
(2m2+2m-6)-(8m+8n-3)
(2x2+8x+8)+2(7x2-8x)
-8(x2-4)+6(x2-2)
-(x2y-5xy+9)+7(x2y-3xy-8)
14
(—x2+15x+13y)-(—x2+15x-25y)
33
11
-—(2k3-9k2-3)-—(5k3+2k2+8k)
43
(7k2+k)-(6k2-4k-5)
(9a2+a-4b)+(7a2+9a+9b)
7x2+(6x2+8x-2)-(4x-7)
3y2-(x2-y)+(7x2-6y2)
1
(7x2-9xy-—x)+(9x2-4xy-4x)
3
31
(—xy-6y2-8)-(x2+—xy+2y2-6)
44
27
(xy+—y+—)+(xy+x+6)
36
(5y-7x+5z2)+(9y-8x-4z2)
(2m2+4m+4)+(m-8n-7)
(3x2+5x+2)-5(2x2-x)
-2(x2-6)+7(x2-5)
-(x2y-6xy-5)+8(x2y+2xy+2)
11
(—x2+20x+15y)+(—x2+13x-18y)
88
11
-—(9k3-3k2-8)-—(6k3-4k2-8k)
45
(k2-9k)-(9k2-k+1)
(3a2+8a-4b)-(4a2+8a+5b)
4x2-(9x2-7x+7)+(7x+3)
y2-(6x2+y)-(6x2-3y2)
8
(7x2-9xy-—x)-(6x2-4xy+2x)
7
73
(—xy+6y2+3)-(x2+—xy-y2-2)
84
61
(xy+—y+—)+(xy+x+9)
53
(3y+5x-6z2)+(7y-x+4z2)
(6m2+7m+1)+(7m+4n+4)
(2x2-7x+5)-7(6x2+x)
-4(x2+1)-9(x2+9)
-(x2y-7xy-2)+4(x2y-7xy+7)
14
(—x2+11x-14y)-(—x2-18x-24y)
55
11
-—(2k3-8k2-9)-—(5k3-4k2+2k)
44
(8k2-3k)+(7k2+3k-4)
(3a2-7a-3b)-(4a2+4a-3b)
7x2-(6x2+8x-1)-(4x-2)
5y2+(6x2+y)-(7x2-y2)
7
(7x2+2xy-—x)-(6x2-5xy-4x)
8
23
(—xy+2y2+3)+(x2-—xy-2y2-3)
34
19
(xy+—y+—)+(xy-x-5)
48
(2y-x+9z2)-(y+5x+8z2)
(3m2+m+1)-(3m-3n+2)
(6x2-5x-7)+9(2x2+x)