分式混合运算专项练习158题(有答案)ok

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分式混合运算专项练习158题(有答案)

(1)

(2) +﹣

(3)

(4)

(5) (﹣)•÷(+)(6) 3.(7) (8)

(9)

(10) .(11) ;

(12) .(13) •÷;

(14) (﹣)÷.

(15)

(16)

(17)

(1+)÷

(18)

(19)

(20) ()2•+÷(21) ;(22)

(23)

(24)

(25)

(26)

(27) ;(28) .

(29) ;

(30) .

(31) ;

(32) ÷•.(33) ()÷.

(34)

(35) (36) ;

(37) ;

(38) ;(39)

(40) .

(41)

(42)

(43)

(44) (﹣)÷

(45)

(46)

(47) +

(48) ;

(49) .(50) .(51)

(52).(53);

(54).(55)÷•;(56)1﹣÷.

(57)

(58)

(59)÷

(60);

(61).

(62);

(63).(64)(+1)÷(1﹣)

(65)

(66)•﹣÷(67);

(68).(69)

(70)[﹣(﹣x﹣y)]÷

(71)﹣÷x.

(72);

(73);

(74)÷(x+3)•;

(75)(a ﹣)÷•

(76)()÷•(2﹣x)2;(77)•(﹣)2(78)

(79);(80)

(81);(82);(83);(84)

(85)

(86)

(87)

(88).(89)

(90).(91);(92).

(93)[+÷(+)2]•

(94)

(95);

(96)

(97);(98)

(99)x ﹣

(100)

(101)

(102).(103).

(104);(105).(106)(x2﹣y2)•÷;

(107)+﹣

(108).(109)÷﹣.

(110)

(111).

(112).

(113)

(114).(115).(116)

(117)

(118)

(119)(120)(x2y﹣1)﹣3•(﹣x﹣2)﹣3÷(xy)﹣1.(121);

(122)(﹣)•.

(123)

(124).(125).(126).

(127).(128).

(129)﹣

(130)

(131)1﹣÷.(132)(﹣)3÷•(﹣)2;(133).(134)

(135).(136).(137)

(138).

(139)

(140).

(141).(142);

(143).(144).(145).(146).(147)(148);(149).(150)

(151)

(152)

(153).(154)

(155)

(156).(157);

(158).

参考答案:

(1)=﹣=;

(2)+﹣=++==;

(3)=﹣=2x+6﹣x+3=x+9;

(4)=÷(﹣)=•(﹣)=﹣.(5)原式===.

(6)原式===

(7)原式==x+y

(8)原式==a﹣1

(9)原式==y﹣3

(10)=

=3(x+2)﹣(x﹣2)=3x+6﹣x+2=2x+8.

(11)原式==;

(12)原式==(﹣1)==

(13)解:原式==;

(14)解:原式==

(15)原式=÷•

=••

=.

(16)原式=•

=﹣=﹣=.

(17)原式= = =.

(18)=

==﹣y.

(19)原式==1﹣==

(20)原式===.

(21)原式=××=.

(22)原式==

(23)原式==﹣1

(24)原式===

(25)=+﹣=,

===;

(26)=﹣••=﹣;

(27)=﹣•, =﹣==﹣;

(28),

=(﹣)•,

=﹣,

=,

=,

=﹣.

(29)原式==(a+1)﹣(a﹣1)=2;

(30)原式=

(31)原式==;

(32)原式==.

(33)()÷=•=

(34)原式===.

(35)原式=•(a﹣1)2=a﹣1.

(36)原式=×=;

(37)原式=×=;

(38)原式=×==;(39)原式==a4b;

(40)原式==

(41)=×=2(m﹣3)﹣(m+3)=m﹣9.

(42)原式==﹣.

(43)原式=﹣+=1﹣x+x2=x2﹣x+1.

(44)原式=(﹣)×=×=.

(45)原式===3(1+x);

(46)原式==.

(47)原式=×+=+=.

(48)原式=﹣==;

(49)原式=••=.

(50)原式=====.(51)原式=====;

(52)原式===.

(53)原式==;

(54)原式=×=

(55)原式=•=;

(56)原式=1﹣=1﹣==.