七年级数学整式的加减法计算题大全 557.docx
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七年级数学整式的加减法计算题大全557
17
(—xy+6y2-8)-(x2+—xy-6y2+3)
86
17
(xy+—y-—)-(xy-x+1)
36
(2y-5x+3z2)+(5y-8x+z2)
(5m2+7m+5)+(m+5n-6)
(5x2+6x-9)-7(x2-3x)
-8(x2-7)-2(x2-4)
-(x2y+4xy-2)+9(x2y+7xy+7)
19
(—x2-29x+11y)+(—x2+14x-28y)
88
11
-—(5k3+2k2-7)+—(5k3+5k2-1k)
24
(k2-5k)-(7k2-9k+9)
(9a2-4a-b)+(7a2+8a-b)
3x2+(9x2+6x+5)+(4x+5)
y2+(9x2+y)-(x2-2y2)
7
(7x2-5xy-—x)+(6x2-2xy+8x)
6
81
(—xy-8y2-4)+(x2-—xy+3y2-1)
74
11
(xy-—y+—)-(xy+x-5)
74
(9y+9x+8z2)+(6y+2x-5z2)
(6m2-5m-1)+(8m-4n-5)
(5x2+2x+2)+5(4x2+3x)
-6(x2-5)+8(x2+1)
-(x2y+4xy+4)+4(x2y-2xy+8)
16
(—x2+28x-20y)+(—x2+11x+21y)
55
11
-—(8k3-9k2+2)-—(6k3+k2+8k)
43
(9k2+5k)+(6k2+3k+7)
(7a2+5a+7b)+(5a2+9a-3b)
2x2-(7x2-5x+5)-(5x-9)
9y2+(2x2+y)-(7x2+9y2)
7
(3x2+7xy-—x)-(6x2-6xy+5x)
8
15
(—xy-7y2-9)+(x2+—xy+3y2+6)
76
46
(xy+—y+—)-(xy+x-8)
57
(7y-9x+3z2)+(4y+2x-2z2)
(7m2+m-3)-(9m-6n-8)
(3x2+3x-5)-7(5x2-3x)
-7(x2+3)+3(x2-1)
-(x2y+4xy-4)-6(x2y+9xy-3)
71
(—x2-17x-12y)+(—x2-19x-15y)
88
11
-—(6k3-4k2-8)+—(4k3+9k2+9k)
22
(4k2-2k)-(7k2-9k-9)
(a2+7a+b)-(7a2+8a-5b)
5x2-(5x2+7x+8)-(7x+6)
6y2-(4x2-y)-(2x2-6y2)
1
(x2-4xy-—x)-(5x2+9xy-3x)
5
11
(—xy-4y2+6)-(x2-—xy-8y2-7)
74
15
(xy+—y-—)-(xy-x+9)
66
(6y+5x+8z2)-(3y+4x-2z2)