七年级数学整式的加减法计算题大全 380.docx
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七年级数学整式的加减法计算题大全380
77
(xy-—y+—)+(xy+x-1)
88
(8y-4x-4z2)-(6y+5x+8z2)
(3m2+5m+2)-(2m-n-6)
(9x2+3x+6)-4(4x2-6x)
-5(x2-1)-4(x2-3)
-(x2y-7xy-6)+4(x2y+3xy-3)
18
(—x2+15x-14y)-(—x2-20x-16y)
77
11
-—(4k3-4k2-9)+—(6k3-7k2-7k)
26
(2k2+8k)-(4k2-5k-7)
(6a2-5a+2b)+(a2+8a-5b)
5x2-(3x2-7x-6)-(4x-3)
5y2+(9x2-y)-(4x2+3y2)
7
(4x2+3xy-—x)+(4x2-7xy+6x)
8
65
(—xy+6y2+3)-(x2-—xy-7y2+5)
56
19
(xy+—y-—)+(xy+x-9)
68
(8y+x-9z2)-(y-5x-9z2)
(8m2-4m-3)+(m+n+6)
(7x2-7x-4)+4(2x2+5x)
-8(x2-9)+8(x2-8)
-(x2y-9xy+8)-8(x2y-8xy+3)
77
(—x2-21x+16y)-(—x2+20x-13y)
66
11
-—(k3+9k2+2)+—(8k3-5k2-5k)
66
(7k2-5k)-(9k2+3k-3)
(3a2-7a-7b)+(a2-3a-7b)
6x2-(x2+4x+6)-(x+5)
8y2+(3x2-y)+(6x2-2y2)
1
(4x2+5xy-—x)+(8x2-3xy+2x)
7
86
(—xy+4y2-2)-(x2-—xy-y2-6)
77
71
(xy-—y-—)-(xy+x+1)
65
(3y-8x+3z2)-(5y-x-7z2)
(4m2+8m+3)-(8m+5n-3)
(x2+9x+2)+9(3x2+8x)
-2(x2+4)-4(x2+2)
-(x2y+9xy+3)-4(x2y+3xy-2)
14
(—x2+27x-20y)+(—x2-18x-21y)
55
11
-—(9k3-4k2+5)-—(4k3-k2-9k)
44
(9k2-6k)-(9k2-4k+5)
(3a2+8a+7b)-(7a2-2a+2b)
4x2-(2x2-6x+3)+(7x-8)
7y2-(5x2-y)+(5x2+5y2)
6
(3x2-8xy+—x)-(3x2-5xy+7x)
5
14
(—xy+7y2-8)+(x2-—xy+y2+1)
85
46
(xy-—y+—)-(xy+x-8)
55
(7y+5x+6z2)+(4y+3x+3z2)
(7m2-8m+9)+(4m-8n+8)