六年级解分式方程练习题及答案.docx
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六年级解分式方程练习题及答案.docx
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六年级解分式方程练习题及答案
六年级解分数方程练习题及答案
(1)4.2-4X=1.8
(2)
X=20×
(3)5X-3×
=
解:
4.2-4X=1.8解:
X=20×
解:
5X-3×
=
4X=4.2-1.8
X=55X-
=
4X=2.4X=5÷
5X=
+
X=2.4÷4X=85X=1
X=0.6X=1÷5
X=
(4)
X=
(5)0.24X-1.8=4.2(6)
X=
×
解:
X=
解:
0.24X-1.8=4.2解:
X=
×
X=
÷
0.24X=4.2+1.8
X=
X=
×
0.24X=6X=
÷
X=
X=6÷0.24X=
×
X=25X=
(7)
X-21×
=4(8)
X÷
=12(9)3.6X÷2=2.16
解:
X-21×
=4解:
X÷
=12解:
3.6X÷2=2.16
X-14=4
X=12×
1.8X=2.16
X=4+14
X=3X=2.16÷1.8
X=18X=3÷
X=1.2
X=18÷
X=3×
X=60X=
(10)X+
X=20(11)2(X-2.6)=8(12)6X+5=13.4
解:
X+
X=20解:
2(X-2.6)=8解:
6X+5=13.4
X=20X-2.6=8÷26X=13.4-5
X=20÷
X-2.6=46X=8.4
X=16X=4+2.6X=8.4÷6
X=6.6X=1.4
(13)
X-
X=
(14)4X-6=38(15)5X=
解:
X-
X=
解:
4X-6=38解:
5X=
X=
4X=38+6X=
÷5
X=
÷
4X=44X=
×
X=
×15X=44÷4X=
X=
X=11
(16)X÷
=
(17)
X=
(18)
X+
X=4
解:
X÷
=
解:
X=
解:
X+
X=4
X=
×
X=
÷
X=4
X=
X=
X=6
(19)
X-25%X=10(20)X+
X=
(21)X-
X=12
解:
X-25%X=10解:
X+
X=
解:
X-
X=12
0.25X=10
X=
X=12
X=10÷0.25X=
÷
X=12÷
X=40X=
X=60
(22)X-0.25=
(23)4+0.7X=102(24)
X+
X=42
解:
(22)X-0.25=
解:
4+0.7X=102解:
X+
X=42
X-
=
0.7X=102-4
X=42
X=
+
0.7X=98X=42÷
X=
X=98÷0.7X=42×
X=140X=36
(25)4X-6×
=2(26)
÷X=
(27)9X÷0.7=9
解:
(25)4X-6×
=2解:
÷X=
解:
9X÷0.7=9
4X-4=2X=
÷
9X=9×0.7
4X=2+4X=
×
9X=6.3
4X=6X=20X=6.3÷9
X=
X=0.7
(25)
X÷
=12(26)3X=
(27)X÷
=
解:
X÷
=12解:
3X=
解:
X÷
=
X=12×
X=
÷3X=
×
X=3X=
X=
×
X=3÷
X=
X=
(28)X+
X=121(29)25%+
X=
(30)X-0.8X=16+6
解:
X+
X=121解:
25%+
X=
解:
X-0.8X=16+6
X=121
+
X=
0.2X=22
X=121÷
X=
-
X=22÷0.2
X=88
X=
X=110
X=
÷
X=
(31)20X-8.5=1.5(32)X+25%X=90(33)(X-32)×5=115
解:
20X-8.5=1.5X+25%X=90(X-32)×5=115
20X=1.5+8.51.25X=90(X-32)=115÷5
20X=10X=90÷1.25X-32=23
X=10÷20X=72X=23+32
X=
X=66
(34)X-
X=
(35)2X+
=
(36)
+X=
解:
X-
X=
解:
2X+
=
解:
+X=
X=
2X=
-
X=
-
X=
÷
2X=
X=
X=
X=
(37)X-
X=21(38)70%X+20%X=3.6 (39)8.8+4X=40
解:
X-
X=21解:
70%X+20%X=3.6 解:
8.8+4X=40
X=210.9X=3.6 4X=40-8.8
X=21÷
X=3.6÷0.9 4X=31.2
X=105X=4X=31.2÷4
X=7.8
(40)4X-3×9=29(41)
X+
=
(42)X-
X=12
解:
4X-3×9=29
X+
=
X-
X=12
4X-27=29
X=
-
X=12
4X=29+27
X=
X=12÷
4X=56X=
÷
X=21
X=56÷4X=
X=14
(43)3X+5×0.3=4.5(44)
X=
(45)X-15%X=68
解:
3X+5×0.3=4.5解:
X=
解:
X-15%X=68
3X+1.5=4.5X=
÷
0.85X=68
3X=4.5-1.5X=
×
X=68÷0.85
3X=3X=
X=80
X=3÷3
X=1
(46)X-
X=
(47)2X+
=
(48)6X+5=13.4
解:
X-
X=
解:
2X+
=
解:
6X+5=13.4
X=
2X=
-
6X=13.4-5
X=
÷
2X=
6X=8.4
X=
×
X=
÷2X=8.4÷6
X=
X=
X=1.4
(49)
X=20×
(50)5X-2.4×5=8(51)
(X-4.5)=6
解:
X=20×
解:
5X-2.4×5=8解:
(X-4.5)=6
X=55X-12=8X-4.5=6÷
X=5÷
5X=8+12X-4.5=9
X=5×
5X=20X=9+4.5
X=
X=4X=13.5
(52)X+
X=121(53)5X-3×
=
(54)
X÷
=12
解:
X+
X=121解:
5X-3×
=
解:
X÷
=12
X=1215X-
=
X=12×
X=121÷
5X=
+
X=3
X=121×
5X=
X=3÷
X=88X=
X=
(55)X÷
=
(56)X+
X=
(57)4X-6×
=2
解:
X÷
=
解:
X+
X=
解:
4X-6×
=2
X=
×
X=
4X-3=2
X=
X=
÷
4X=2+3
X=
4X=5
X=
(58)
÷X=
(59)
X=
(60)
X=
×
解:
÷X=
解:
X=
解:
X=
×
X=
÷
X=
÷
X=
(61)X÷
=
×
(62)
X+
=
(63)
X+
X=4
解:
X÷
=
×
解:
X+
=
解:
X+
X=4
X÷
=
X=
-
X=4
X=
×
X=1X=4÷
X=
X=
X=6
(63)4X+5=11.4(63)4X+6=38(63)X÷
=
解:
4X+5=11.4解:
4X+6=38解:
X÷
=
4X=11.4-54X=38-6X=
4X=6.44X=32X=
X=6.4÷4X=32÷4
X=1.6X=8
(64)5X=
(65)
X=
(66)
X÷
=16
解:
5X=
解:
X=
解:
X÷
=16
X=
÷5X=
÷
X=16×
X=
X=
÷
X=16×
X=
×
X=4
X=
X=4÷
X=6
(67)
X=
(68)
X=
×
(69)X-0.25=
解:
X=
解:
X=
×
解:
X-0.25=
X=
÷
X=
X-
=
X=
×
X=
÷
X=
+
X=
X=
X=
(70)4+0.8X=92(71)
X+
X=21(72)X+
X=105
解:
4+0.8X=92解:
X+
X=21解:
X+
X=105
0.8X=92-4
X=21
X=105
0.8X=88X=21÷
X=105÷
X=110X=18X=84
(73)X-
X=400(74)X-0.875X=8(75)X+
X=20
解:
X-
X=400解:
X-0.875X=8解:
X+
X=20
X=4000.125X=8
X=20
X=400÷
X=8÷0.125X=20÷
X=640X=64X=14
(76)X×(
+
)=
(77)X-0.375X=
(78)X-
X=
解:
X×(
+
)=
解:
X-0.375X=
解:
X-
X=
X×
=
0.625X=
X=
X=
÷
X=
÷
X=
÷
X=2X=
X=
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