人教版八年级数学上册分式的加减法练习题精选40文档格式.docx
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12
3x+n3x-n
a-96
aa
5nnn
———-———-———
n+8n+8n+8
11
4c2d29cd
5xx
4x-4(4x-4)2
b4
————-———
x2-b2x-b
———+a+3
a-7
x+y9x
x2+y2x2+y2
33
2m+b2m-b
y+57
yy
3nn8n
n+3n+3n+3
21
9cd23cd2
6a3a
4a-2(4a-2)2
y2
x2-y2x+y
———+x-2
x-8
x+y3x
x-yx-y
m+am-a
n-58
nn
3mm2m
m+2m+2m+2
8cd4c2d
n2n
2n+1(2n+1)2
———+x-5
x-4
x3+y3x3+y3
31
m+bm-b
n+69
aaa
a-9a-9a-9
42
9c2d29cd
xx
4x+7(4x+7)2
x4
m
———+m+1
m-5
5x+3y8x
x3-y3x3-y3
3p+2b3p-2b
m+12
mm
2aaa
———+———+———
a-2a-2a-2
4cd6c2d2
6m-7(6m-7)2
b2
m2-b2m+b
———-m+3
m-9
8x+9y4x
x2-y3x2-y3
22
3m+3b3m-3b
b-73
yy7y
y+1y+1y+1
6cd24cd2
7a9a
6a-6(6a-6)2
y3
m2-y2m-y
———-a-9
a-5
55
y+69
7yy4y
y+6y+6y+6
4cd8cd
6y+3(6y+3)2
b3
———+a+5
a-6
x+4y5y
24
2y+3b2y-3b
y+71
3y7yy
y-2y-2y-2
13
3c2d5cd2
6yy
4y+2(4y+2)2
b5
x-6
x-y2y
2y+2a2y-2a
x+25
y2yy
y+8y+8y+8
23
9c2d2cd
3a7a
4a+6(4a+6)2
n1
a2-n2a+n
———+x+7
x+y2y
x3+y2x3+y2
3p+q3p-q
y+28
2mmm
6c2d7cd
3a3a
5a+8(5a+8)2
n2
m2-n2m-n
a2
———-a-5
7x+2y2y
x+y2x+y2
3x+3n3x-3n
m+51
aa8a
a-4a-4a-4
4c2d22cd2
2nn
3n-2(3n-2)2
m4
m2-b2m-b
———-m-7
m-7
x+7y5x
15
2m+3q2m-3q
y+32
x8xx
x-8x-8x-8
43
9cd9cd2
5yy
6y+2(6y+2)2
x2
———+m+3
m-2
x+4y4x
2p+3q2p-3q
a-39
nnn
n+2n+2n+2
8c2d22c2d2
a6a
4a-5(4a-5)2
a2-b2a-b
———-a-2
a-9
52
3p+2a3p-2a
a-75
3x9xx
x-3x-3x-3
8cd29c2d2
2y+5(2y+5)2
———+a-5
2x-4y8y
2x+n2x-n
n-13
3yyy
4cd7cd
8bb
2b+7(2b+7)2
a1
a2-n2a-n
———-a-1
x+7y6y
x+2nx-2n
b-95
9nn2n
n+5n+5n+5
2cd5c2d
5aa
5a+3(5a+3)2
a2-b2a+b
m2
———+m-4
m-1
4x+9y4x
x3+yx3+y
y+3qy-3q
x-39
5yyy
y+9y+9y+9
7c2d22cd2
3m3m
5m+4(5m+4)2
n5
m2-n2m+n
———+m+2
x+5y3y
14
y+2ny-2n
n+45
xxx
x-5x-5x-5
5cd6cd
2x+9(2x+9)2
b6
———+a-9
a-4
x-y7x
x+nx-n
n-38
y5y8y
3c2d7cd2
b8b
2b+4(2b+4)2
n3
x2-n2x+n
———+x+5
x+4y5x
m+qm-q
b+23
mm7m
4cd28cd
6y-8(6y-8)2
———+a-6
x-y4y
35
2y+n2y-n
y+19
3y2y8y
3c2d6cd
a9a
3a-6(3a-6)2
x2-y2x-y
———-a+3
6x-3y9x
3x+a3x-a
x+47
3yy4y
y-3y-3y-3
8c2d8c2d2
6y+9(6y+9)2
———+m-1
x2-y2x2-y2
2x+3a2x-3a
x+31
4m2mm
m-7m-7m-7
9c2d7cd2
6bb
4b+5(4b+5)2
———-m+5
m-3
x+4y8y
x3-yx3-y
3y+b3y-b
x+18
6x6x3x
x-7x-7x-7
4c2d25c2d
2yy
5y-7(5y-7)2
a3
———-a+7
x-y6y
44
m+2qm-2q
n-72
nn2n
6c2d6cd2
y2y
m6
———+m-2
m-4
x+y8y
x2+yx2+y
3y+2n3y-2n
b+42
6n6n5n
n+1n+1n+1
8cd8cd
9b7b
5b-6(5b-6)2
n4
a-8
5x-7y3x
54
y+3ay-3a
n+26
4c2d24cd2
2n8n
5n+4(5n+4)2
x2-n2x-n
4x+y9x
x+bx-b
b-98
mm9m
m+6m+6m+6
2c2d28c2d
7m8m
2m-5(2m-5)2
———+a+2
4x+8y9y
2p+3n2p-3n
x+56
7nnn
3cd28cd
6x+6(6x+6)2
a4
———-m+9
x+yx+y
p+2bp-2b
y+84
m5mm
m-6m-6m-6
7cd29cd
4n+9(4n+9)2
a2-y2a-y
x2
———-x+3
x-9
4x-y8x
x+ax-a
m-12
9nn8n
n+4n+4n+4
3c2d25cd
7a6a
5a+5(5a+5)2
a-1
7x+y4x
x-y3x-y3
53
3m+b3m-b
x+69
nn7n
n-1n-1n-1
6c2d2cd
6n+2(6n+2)2
———-a+5
x+2y2x
p+3np-3n
y+13
8a3aa
3cd6c2d2
3m-8(3m-8)2
x6
x-3y2x
a-33
4n2nn
n+7n+7n+7
8c2d29cd
5b4b
3b+3(3b+3)2
2x+2a2x-2a
m+97
m3mm
m+9m+9m+9
6a+5(6a+5)2
———-a-6
3x-3y2x
3p+3b3p-3b
m+82
4mm7m
m+3m+3m+3
8cd29cd
y4
———-m-4
x+3y7x
2m+a2m-a
n-32
a5a5a
a+5a+5a+5
5cd7c2d2
8aa
4a-6(4a-6)2
———-x-4
x-3
7x-7y6x
x-y2x-y2
m+3qm-3q
b-87
5yy9y
y-1y-1y-1
6cd8cd
4y+9(4y+9)2
———+x+6