七年级数学整式的加减法计算题大全 12.docx
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七年级数学整式的加减法计算题大全12
(5m2+9m+4)-(4m-4n-7)
(6x2-8x+5)+2(5x2+8x)
-9(x2+5)+2(x2+4)
-(x2y-6xy+5)-2(x2y-8xy+5)
61
(—x2-30x-11y)-(—x2+15x-28y)
77
11
-—(4k3+2k2+4)-—(3k3+5k2+2k)
45
(8k2+8k)-(9k2-5k-4)
(3a2+8a+b)-(7a2-2a-7b)
7x2+(5x2+4x-2)-(3x-7)
9y2+(3x2-y)+(5x2-y2)
1
(5x2+6xy-—x)-(2x2+2xy+8x)
3
69
(—xy-2y2-9)+(x2+—xy-8y2+2)
58
15
(xy+—y+—)-(xy+x+5)
64
(4y-8x-4z2)-(y+7x+3z2)
(8m2+m+8)-(3m+7n-8)
(3x2+x+5)+6(8x2+7x)
-5(x2+9)+7(x2-5)
-(x2y+8xy+6)+4(x2y+2xy-4)
11
(—x2-11x+14y)-(—x2+20x+26y)
44
11
-—(3k3+7k2-6)-—(k3+3k2+3k)
66
(6k2-3k)+(9k2+5k-1)
(6a2+3a+6b)+(7a2+5a-5b)
7x2-(x2+4x+6)-(2x+5)
2y2-(4x2-y)+(9x2-4y2)
8
(8x2+5xy+—x)+(3x2+2xy+5x)
7
57
(—xy-8y2-3)-(x2-—xy-4y2-8)
66
94
(xy-—y+—)-(xy+x+3)
83
(3y-x-8z2)+(4y-2x+8z2)
(m2+5m+6)+(8m-7n-2)
(7x2+3x+7)-8(9x2-3x)
-6(x2-2)+5(x2-8)
-(x2y+3xy-8)+2(x2y+3xy-5)
75
(—x2-25x-15y)-(—x2-15x+17y)
66
11
-—(2k3+3k2+8)+—(9k3-3k2+4k)
26
(2k2-7k)+(8k2-8k-8)
(9a2+3a-8b)+(4a2-9a+2b)
3x2-(4x2-8x+3)+(2x-8)
6y2+(2x2+y)-(x2-3y2)
7
(9x2-4xy+—x)-(5x2+9xy-7x)
6
75
(—xy+8y2+9)+(x2-—xy+3y2+2)
64
11
(xy+—y+—)-(xy-x-6)
47
(7y+4x-3z2)+(7y+7x-4z2)
(6m2-3m-1)+(3m-3n+6)
(7x2-5x-6)+4(x2-7x)
-3(x2+7)+3(x2+5)