人教版八年级数学上册分式的加减法练习题精选20Word格式文档下载.docx
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x2+yx2+y
32
2m+q2m-q
x+16
3yyy
———-———+———
y-3y-3y-3
9c2d5c2d2
8b8b
————+————
3b-9(3b-9)2
x3
x2-n2x+n
x-1
5x-y9y
x-yx-y
34
3p+2b3p-2b
m+72
mm
6aaa
a+1a+1a+1
44
3cd7cd2
9b4b
5b+9(5b+9)2
a2
————+———
a2-b2a-b
a
———+a+9
a-6
x-y4x
x+y3x+y3
31
y+3ay-3a
b-32
bb
9yyy
y+3y+3y+3
14
7c2d7cd
8xx
6x+4(6x+4)2
n5
m2-n2m-n
m2
———+m+8
m-1
x+y8y
x2+y2x2+y2
55
y+2ay-2a
n+52
nn
y-1y-1y-1
3c2d22c2d
a2a
4a+4(4a+4)2
n2
a2-n2a-n
———+a-3
a-9
2x-3y5x
x-y2x-y2
m+2am-2a
x+51
xxx
———-———-———
x+1x+1x+1
13
8cd2cd2
5m-8(5m-8)2
x1
x2-b2x+b
———+m+5
x+y7y
x+y2x+y2
y+2by-2b
y-94
yyy
y-6y-6y-6
4cd25cd
7yy
3y-5(3y-5)2
m4
———+x+7
x-8
x+y3x
x3+yx3+y
22
3x+2n3x-2n
m+39
nn5n
n+3n+3n+3
12
6c2d2c2d2
a7a
6a-9(6a-9)2
a2-n2a+n
a2
———-a-9
a-5
6x-y8x
x-y3x-y3
2m+b2m-b
m+11
m6m3m
m-2m-2m-2
7c2d23c2d2
8yy
5y+3(5y+3)2
x6
x
———+x+5
x-6
x-y3x
x2-y2x2-y2
42
x+3qx-3q
b+16
3mm7m
m-3m-3m-3
8c2d25cd2
b8b
4b+5(4b+5)2
x2-y2x+y
———-x-8
x-9
x-7y7y
21
3m+2n3m-2n
m-15
6y5y4y
6c2d28c2d
aa
2a-8(2a-8)2
x2
———+a+4
2x-7y2y
45
3m+a3m-a
a-12
4aa8a
a-7a-7a-7
24
7c2d8c2d
2b-9(2b-9)2
x2-b2x-b
———+x-9
6x-4y3y
x3+y2x3+y2
2y+a2y-a
m+74
8yyy
7cd7c2d
b2b
5b-2(5b-2)2
m1
m2-b2m+b
———+m+9
m-3
5x-y3y
35
3p+2a3p-2a
m+59
8b7bb
b+5b+5b+5
9cd5c2d
9a5a
3a-3(3a-3)2
n6
x-6y2y
3p+3a3p-3a
m+84
3mm8m
m-7m-7m-7
9c2d4cd
3yy
4y+1(4y+1)2
———-m+1
2x+y4y
15
p+bp-b
y-52
nnn
33
5c2d4cd
3x6x
6x+1(6x+1)2
a2-b2a+b
———-a-6
x-y3y
x+yx+y
y-38
y8y2y
9cd5c2d2
2n-6(2n-6)2
x4
———-x+9
x-6y7y
y+3by-3b
y-19
b6b4b
b-9b-9b-9
4c2d3c2d
y7y
5y+4(5y+4)2
———+a+6
a-3
x+9y7x
m+qm-q
y+55
2x7x3x
x+8x+8x+8
8cd25cd
6a-5(6a-5)2
a1
———-a-3
a-2
4x+y5x
43
3x+3n3x-3n
x-84
yy6y
6cd23cd
a5a
5a+2(5a+2)2
n1
m-6
9x-4y4x
2y+2a2y-2a
n-61
2bb9b
b-3b-3b-3
3cd28c2d2
x9x
6x-9(6x-9)2
y2
———+m+2
m-7
52
x+nx-n
a-58
2x4xx
x-9x-9x-9
7c2d29c2d2
3a-4(3a-4)2
b4
———-m+8
m-5
x-9y8y
2y+b2y-b
y-16
3xx4x
x+5x+5x+5
6c2d23c2d
2a5a
6a-7(6a-7)2
———+a-2
8x-y5y
y+2qy-2q
a+45
3xx9x
x+2x+2x+2
7cd3c2d
7aa
2a-6(2a-6)2
m2-n2m+n
———-x-3
x-5
3x+7y2x
2x+q2x-q
m+41
a4aa
a+7a+7a+7
4c2d4c2d
2yy
y4
———+m-2
2x-y7y
3p+a3p-a
n+82
bb6b
8c2d7c2d2
2a7a
4a-3(4a-3)2
m3
———+a+8
x-7y2x
x3-yx3-y
p+qp-q
m-86
4m3m4m
m+5m+5m+5
5c2d22c2d
6a2a
3a+7(3a+7)2
———-x+7
2x+y3x
x+2bx-2b
b+22
4x8x2x
x+9x+9x+9
5cd28c2d
6y-3(6y-3)2
m5
2x+4y2x
y-43
mm5m
6c2d24cd
9mm
3m+3(3m+3)2
b3
———+a+7
a-8
x+8y7x
n+15
7xx3x
x-5x-5x-5
9cd9cd
3a-5(3a-5)2
———-m-9
m-8
8x+y8x
x2+y3x2+y3
m+2nm-2n
n+45
bbb
b-7b-7b-7
2cd3cd2
7y3y
6y+8(6y+8)2
m6
———-m-2
3x+y4y
54
3y+n3y-n
b+75
5mm3m
m+9m+9m+9
8c2d27c2d
9yy
5y-6(5y-6)2
———-m-4
2x-6y5x
y+qy-q
y-62
4m8m3m
m-6m-6m-6
2cd28cd
4bb
3b+3(3b+3)2
———-x-7
2x-y4y
a+16
b2b6b
b-8b-8b-8
7cd23c2d
7xx
2x+8(2x+8)2
a-7
m+71
b5bb
4cd28c2d
6m+9(6m+9)2
———-m+4
8x-3y3x
p+np-n
b+23
bb3b
b+6b+6b+6
4cd25cd2
6a+3(6a+3)2
m2
m2-y2m-y
x+6y9x
53
y+3qy-3q
n+54
4a3aa
2cd8cd
3y-1(3y-1)2
———+x+2
x-3
5x+6y9y
p+2ap-2a
a+62
4aa5a
8cd5c2d2
y9y
5y-8(5y-8)2
b2
———+m-3
x+3y5x
m+3bm-3b
m+92
2mmm
m+2m+2m+2
5cd7c2d2
4n+8(4n+8)2
———+m+7