七年级数学整式的加减法计算题大全 561.docx
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七年级数学整式的加减法计算题大全561
4y2-(x2-y)-(7x2+y2)
6
(x2+9xy+—x)+(7x2+8xy+x)
5
61
(—xy-4y2+2)+(x2+—xy+y2-9)
57
54
(xy+—y+—)-(xy+x+5)
63
(8y+6x-5z2)-(3y+9x+6z2)
(5m2-9m-6)+(4m-5n-8)
(5x2-3x-3)+3(2x2+9x)
-5(x2+2)-5(x2-4)
-(x2y-7xy-5)-8(x2y+2xy+2)
21
(—x2-23x-14y)+(—x2+17x-23y)
33
11
-—(8k3-4k2-6)-—(7k3-8k2+4k)
45
(5k2+k)+(4k2+8k-9)
(a2-3a-2b)-(7a2+7a+2b)
7x2-(6x2+8x-6)-(8x-1)
6y2-(x2-y)+(8x2-4y2)
9
(x2-xy+—x)-(4x2+7xy-6x)
8
11
(—xy+9y2-2)+(x2+—xy+4y2+9)
58
72
(xy-—y-—)-(xy+x-6)
63
(5y+3x+6z2)-(9y+5x-3z2)
(9m2-6m+6)+(m+2n-9)
(8x2+2x-7)+6(x2+2x)
-6(x2+9)-2(x2-2)
-(x2y+6xy-3)-7(x2y+9xy-8)
11
(—x2+21x+16y)-(—x2-15x+30y)
88
11
-—(6k3+8k2-6)+—(5k3-3k2-3k)
63
(9k2+9k)-(7k2-k-9)
(9a2+8a+7b)+(8a2-8a+2b)
9x2-(6x2+2x+4)+(9x-2)
7y2-(4x2-y)-(7x2+4y2)
1
(3x2+2xy+—x)-(x2-3xy-4x)
4
21
(—xy+2y2-4)+(x2-—xy-2y2-8)
33
17
(xy+—y+—)-(xy+x-1)
38
(7y+7x-8z2)+(y-2x+6z2)
(4m2-4m-3)+(3m-n-5)
(7x2-4x-6)+9(8x2+3x)
-3(x2+8)-7(x2+1)
-(x2y+5xy+9)-7(x2y-7xy-2)
35
(—x2+13x+10y)-(—x2-15x+20y)
44
11
-—(7k3+2k2+6)+—(4k3-2k2+5k)
23
(k2+9k)+(4k2-4k+8)
(6a2-4a+6b)-(6a2-6a+b)
5x2+(6x2-3x+9)-(6x-1)
2y2-(4x2+y)-(3x2-9y2)
1
(x2+8xy+—x)+(6x2+6xy+x)
6
16
(—xy+9y2+7)+(x2-—xy+9y2-6)
45