七年级数学整式的加减法计算题大全 31.docx
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七年级数学整式的加减法计算题大全31
(6x2-8x-5)-4(7x2+8x)
-3(x2+5)-3(x2+8)
-(x2y+9xy+9)-3(x2y+7xy-9)
71
(—x2+19x-13y)-(—x2-18x-14y)
66
11
-—(2k3+6k2+6)+—(2k3+4k2+6k)
65
(3k2+3k)-(8k2+5k-7)
(5a2+4a-7b)-(a2+2a+6b)
2x2-(7x2+8x+3)-(8x-1)
y2-(8x2+y)+(3x2-6y2)
1
(2x2-3xy-—x)-(5x2+2xy+5x)
6
17
(—xy-y2-3)-(x2+—xy-6y2-8)
48
12
(xy-—y-—)+(xy+x+5)
63
(4y+6x+8z2)+(2y+x-3z2)
(m2-9m-2)+(8m-2n-7)
(9x2-x+9)-6(7x2+2x)
-4(x2-4)-5(x2-7)
-(x2y+5xy-7)+7(x2y-3xy+6)
55
(—x2-14x-16y)-(—x2+13x+13y)
44
11
-—(3k3-5k2-6)-—(6k3+7k2+6k)
62
(5k2+7k)+(k2-k-4)
(8a2-2a+4b)+(4a2-7a+7b)
7x2-(7x2-2x-4)-(7x-2)
5y2+(9x2-y)-(5x2+y2)
4
(9x2+4xy-—x)+(5x2-7xy-5x)
3
24
(—xy+4y2+4)-(x2-—xy-6y2-2)
35
15
(xy-—y-—)+(xy+x-2)
66
(7y+6x+3z2)-(9y+5x-2z2)
(2m2+2m+1)-(5m+5n+5)
(3x2-6x-2)+7(4x2-x)
-5(x2-1)+6(x2-7)
-(x2y+9xy+9)-2(x2y-2xy+4)
11
(—x2-21x-14y)-(—x2+13x+16y)
33
11
-—(3k3-k2+9)+—(7k3-6k2-8k)
43
(9k2-2k)+(3k2+9k-4)
(a2-2a+6b)+(7a2+9a+9b)
4x2+(6x2-9x-7)-(3x+4)
3y2+(2x2-y)+(9x2+9y2)
3
(8x2+3xy+—x)+(4x2-8xy-4x)
4
29
(—xy+6y2+2)-(x2+—xy-y2-1)
38
17
(xy+—y-—)-(xy+x+3)
68
(7y-4x+5z2)-(9y+3x+z2)
(m2+m+5)+(2m+3n+8)
(7x2-x-5)+4(x2-5x)
-6(x2+9)+7(x2-8)
-(x2y-6xy-6)-3(x2y-2xy-5)