人教版八年级数学上册分式的加减法练习题精选27Word文档格式.docx
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n+29
——+——
y7yy
———+———+———
y+2y+2y+2
42
9c2d29c2d2
5m8m
3m+6(3m+6)2
a6
a2-b2a-b
m2
———+m-5
m-3
8x-9y9x
x3+y3x3+y3
15
m+2nm-2n
y-38
m2mm
———-———-———
m-2m-2m-2
21
8cd6c2d2
m4m
2m+9(2m+9)2
a5
a2-n2a-n
m
———-m-8
m-9
x3-yx3-y
2y+3n2y-3n
n-23
m6mm
m-3m-3m-3
32
4cd25cd2
9mm
3m-1(3m-1)2
x2
———-x+1
x-5
x-5y7y
25
x+nx-n
m-43
a2aa
a+3a+3a+3
3cd26c2d
6b5b
4b-7(4b-7)2
a2
———-x-6
x-8
6x-3y5y
x+yx+y
y+2ay-2a
x+28
xx
nnn
n+7n+7n+7
11
4c2d24c2d2
4m+5(4m+5)2
n1
a2-n2a+n
———-m+1
m-8
x+y7x
x3-y2x3-y2
12
x+2bx-2b
n+73
m9mm
m+6m+6m+6
34
3c2d8c2d2
8a6a
6a+6(6a+6)2
m5
m2-y2m-y
———-m-2
m-2
x-y4y
p+ap-a
n-86
5b4b4b
b-7b-7b-7
31
8c2d2c2d2
x8x
2x+5(2x+5)2
a2-y2a-y
———-x+4
4x+y4x
x3+y2x3+y2
n-71
5n2n6n
n-7n-7n-7
2c2d3cd
6bb
5b-4(5b-4)2
m4
m2-b2m+b
a2
———+a+2
a-1
x-y7y
x-y2x-y2
m+58
8x2xx
x-2x-2x-2
41
2cd4cd
b5b
3b+1(3b+1)2
m6
———+m-1
7x-y6y
2p+q2p-q
x-64
a4a8a
a+9a+9a+9
33
3cd8cd
x4x
2x+6(2x+6)2
m2
m2-n2m-n
———+x+4
4x-y2x
x2+y2x2+y2
3m+b3m-b
a+42
aa
4bb4b
b-3b-3b-3
8cd24c2d2
2m2m
6m-8(6m-8)2
y6
m2-y2m+y
———+a-3
a-6
x+y4x
m+am-a
y+28
8y6yy
y-8y-8y-8
4c2d25c2d
6a5a
2a-4(2a-4)2
b2
a2-b2a+b
———+x+8
x-7y7y
x2-yx2-y
m+14
9nn4n
n-6n-6n-6
5cd27c2d
6xx
6x+2(6x+2)2
m2-n2m+n
———+x-9
x-7
x-7y5y
2y+3b2y-3b
m+36
xx8x
x-4x-4x-4
8cd7c2d2
9aa
2a-5(2a-5)2
a2-y2a+y
x+3y2x
3x+n3x-n
b+35
bb
mmm
m+2m+2m+2
2c2d7cd2
5n+6(5n+6)2
x6
x2-y2x+y
———+a+1
a-7
9x-y6y
45
2p+2b2p-2b
y+64
a8aa
a+7a+7a+7
8c2d7cd
a8a
2a-3(2a-3)2
m3
———+a+3
8x+8y9x
x+3nx-3n
n-17
6n4n3n
n+1n+1n+1
13
6cd4cd
b8b
6b-4(6b-4)2
x2-b2x-b
———-x-8
x-2
x+y2x
m+bm-b
b+67
6b4b8b
b+8b+8b+8
9c2d7c2d
3a7a
5a-6(5a-6)2
a1
———+x-1
x-9
x+y3x
m+2qm-2q
m+84
b7b7b
b+3b+3b+3
9c2d8cd2
4x+8(4x+8)2
x5
———-x+2
x-7y3y
x2+y3x2+y3
14
x+bx-b
m+47
b6bb
b-1b-1b-1
5cd6c2d
y8y
5y+6(5y+6)2
b5
x2-b2x+b
———-m+7
m-4
3x+y4y
x+y3x+y3
52
2m+3b2m-3b
b+78
x3x5x
x-6x-6x-6
8c2d5c2d
4n-1(4n-1)2
x-1
3x-3y2x
2x+3b2x-3b
a+43
2a9a4a
7cd6cd
2xx
5x+2(5x+2)2
x2
x2-y2x-y
———-a-5
a-8
x-y7x
22
3p+2q3p-2q
n+52
8aaa
a-4a-4a-4
7cd6c2d2
b4b
4b+8(4b+8)2
3x-y4x
b-55
6yy7y
y+7y+7y+7
6c2d27c2d2
7y2y
4y-4(4y-4)2
———-a-6
4x-8y7y
53
3p+3a3p-3a
y-43
4n6n5n
n+4n+4n+4
8c2d8cd2
6a-5(6a-5)2
n2
———-a-7
2x-9y6y
n+91
b3bb
b+1b+1b+1
7cd3cd2
3nn
6n+5(6n+5)2
m2-b2m-b
———+x+9
9x-y7y
m+3nm-3n
b+57
y4y6y
y-5y-5y-5
3cd8c2d2
6mm
2m+1(2m+1)2
7x+8y8y
p+qp-q
a-39
b-9b-9b-9
8cd7cd2
6a3a
6a-1(6a-1)2
x+y4y
m+nm-n
n-75
n9nn
24
2cd27cd
4x2x
3x+8(3x+8)2
———-a+9
a-3
x-y8x
m+2am-2a
y-54
n8n2n
4c2d5cd
2bb
5b+8(5b+8)2
a3
3x+y4x
x-y3x-y3
y+3by-3b
x-49
a5a8a
a-5a-5a-5
9c2d25c2d2
6a7a
6a+8(6a+8)2
———-a+1
x+y5x
2y+2b2y-2b
m+24
4y2y7y
y+6y+6y+6
7c2d26cd2
a4a
4a+2(4a+2)2
———-m-1
x+87
x8x8x
x+2x+2x+2
6cd4cd2
4x-3(4x-3)2
———-a-2
x+3y4y
x3+yx3+y
2m+3q2m-3q
m-69
9x9xx
x-3x-3x-3
5c2d4cd2
3mm
5m+5(5m+5)2
y5
———-x-3
x+qx-q
y-95
4b6bb
b-2b-2b-2
44
9cd7c2d2
2nn
2n-5(2n-5)2
———+a+5
x-5y4x
x2+yx2+y
y+ay-a
x+66
mm3m
m-4m-4m-4
5c2d6c2d2
7nn
6n-4(6n-4)2
a-4
7x+4y2y
x+ax-a
x+13
yy3y
y-6y-6y-6
2cd8c2d2
5b-1(5b-1)2
———-a+2
x+5y4y
35
a+96
m+8m+8m+8
4cd29c2d2
6b+3(6b+3)2
a4
———-x+8