小学五年级解方程题(附答案)

如题所述

(1)2x+8=16
2x=16-8
x=8÷2
x=4
(2)x÷5=10
x=5×10
x=50
(3)x+7x=8
8x=8
x=8÷8
x=1
(4)9x-3x=6
6x=6
x=6÷6
x=1
(5)6x-8=4
6x=8+4
x=12÷6
x=2
(6)5x+x=9
6x=9
x=9÷6
x=1.5
(7)8x-8=6x
8x-6x=8
2x=8
x=8÷2
x=4
(8)40÷5x=20
5x=40÷20
x=2÷5
x=0.4
(9)2x-6=12
2x=6+12
2x=18
x=18÷2
x=9
(10)7x+7=14
7x=14-7
x=7÷7
x=1
(11)6x-6=0
6x=6
x=6÷6
x=1
(12)5x+6=11
5x=11-6
5x=5
x=5÷5
x=1
(13)2x-8=10
2x=8+10
x=18÷2、
x=9
(14)12x-8=4
12x=8+4
x=12÷12
x=1
(15)(x-5)÷6=7
x-5=6×7
x=42+5
x=47
(16)3x+7=28
3x=28-7
x=21÷3
x=7
(17)3x-7=26
3x=7+26
x=33÷3
x=11
(18)9x-x=16
8x=16
x=16÷8
x=2
(19)24x+x=50
25x=50
x=50÷25
x=2
(20)7x-8=20
7x=8+20
x=28÷7
x=4
(21)3x-9=30
3x=9+30
x=39÷3
x=13
(22)6x+6=12
6x=6+12
x=18÷6
x=3
(23)3x-3=12
3x=3+12
x=15÷3
x=5
(24)5x-3x=4
2x=4
x=4÷2
x=2
(25)2x+16=19
2x=19-16
x=3÷2
x=1.5
(26)5x+8=19
5x=19-8
x=11÷5
x=2.2
(27)14-6x=8
6x=14-8
6x=6
x=6÷6
x=1
(28)15+6x=27
6x=27-15
x=12÷6
x=2
(29)5-8x=4
8x=5-4
x=1÷8
x=0.125
(30)7x+8=15
7x=15-8
x=7÷7
x=1
(31)9-2x=1
2x=9-1
x=8÷2
x=4
(32)4+5x=9
5x=9-4
x=5÷5
x=1
(33)10-x=8
x=10-8
x=2
(34)8x+9=17
8x=17-9
x=8÷8
x=1
(35)9+6x=27
6x=27-9
x=18÷6
x=3
(36)x+9x=4+7
10x=11
x=11÷10.
x=1.1
(37)2x+9=17
2x=17-9
x=8÷2
x=4
(38)8-4x=6
4x=8-6
x=4÷4
x=1
(39)6x-7=11
6x=7+11
x=18÷6
x=3
(40)5x-9=8
5x=9+8
x=17÷5
x=3.4
(41)23x-14x=18
9x=18
x=18÷9
x=2
(42)x+14x=75
15x=75
x=75÷15
x=5
(43)23x=14x+18
23x-14x=18
9x=18
x=18÷9
x=2
(44)20x-12x=100
8x=100
x=100÷8
x=12.5
(45)5x-2x=30
3x=30
x=30÷3
x=10
(46)89x-43x=9.2
46x=9.2
46x=9.2÷46
x=0.2
(47)5x-45=100
5x=45+100
x=145÷5
x=29
(48)1.2x-0.5x=6.3
0.7x=6.3
x=6.3÷0.7
x=9
(49)23.4+2x=56
2x=56-23.4
x=32.6÷2
x=16.3
(50)4x-x=48.6
3x=48.6
x=48.6÷3
x=16.2
(51)8-7x=1
7x=8-1
x=7÷7
x=1
(52)x-30=12
x=30+12
x=42
(53)6x-21=21
6x=21+21
x=42÷6
x=7
(54)6x-3=6
6x=3+6
x=9÷6
x=1.5
(55)4x=16×0.2
4x=3.2
x=3.2÷4
x=0.8
(56)4x-18=14
4x=18+14
x=32÷4
x=8
(57)5x+9=11
5x=11-9
x=2÷5
x=0.4
(58)6+2x=11
2x=11-6
x=5÷2
x=2.5
(59)(x+4)÷8=23
x+4=23×8
x=184-4
x=180
(60)6x÷12=8
6x=12×8
x=96÷6
x=16
(61)x÷5.7=2
x=5.7×2
x=11.4
(62)156-2x=18
2x=156-18
x=138÷2
x=69
(63)3.5×2x=4.2
7x=4.2
x=4.2÷7
x=0.6
(64)2x=26×1.5
2x=39
x=39÷2
x=19.5
(65)9x=18
x=18÷9
x=2
(66)9.2÷x=0.4
x=9.2÷0.4
x=23
(67)15.9÷x=0.3
x=15.9÷0.3
x=53
(68)x÷0.5=2.6
x=0.5×2.6
x=1.3
(69)x+13=33
x=33-13
x=20
(70)300-5x=80
5x=300-80
x=220÷5
x=44
(71)180-6x=54
180-6x=54
6x=180-54
x=126÷6
x=21
(72)12+34x=46
34x=46-12
x=34÷34
x=1
(73)22-4x=12
4x=22-12
x=10÷4
x=2.5
(74)3x÷0.7=6
3x=0.7×6
x=4.2÷3
x=1.4
(75)9.4x-0.4x=16.2
9x=16.2
x=16.2÷9
x=1.8
(76)112-4x=20
4x=112-20
x=92÷4
x=23
(77)3x+7x=1.4
10x=1.4
x=1.4÷10
x=0.14
(78)12x+34x=92
46x=92
x=92÷46
x=2
(79)18x-14x=12
4x=12
x=12÷4
x=3
(80)3x-5×14=14
3x-70=14
3x=70+14
x=84÷3
x=28
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第1个回答  2020-08-02
3X+5X=48 14X-8X=12 6*5+2X=44 20X-50=50 28+6X=88 32-22X=10 24-3X=3 10X*(5+1)=60 99X=100-X X+3=18 X-6=12 56-2X=20 4y+2=6 x+32=76 3x+6=18 16+8x=40 2x-8=8 4x-3*9=29 8x-3x=105 x-6*5=42 x+5=7 2x+3=10 12x-9x=9 6x+18=48 56x-50x=30 5x=15 78-5x=28 32y-29=3 5x+5=15 89x-9=80 100-20x=20 55x-25x=60 76y-75=1 23y-23=23 4x-20=0 80y+20=100 53x-90=16 2x+9x=11 12y-12=24 80+5x=100 7x-8=6 65x+35=100 19y+y=40 25-5x=15 79y+y=80 42x+28x=140 3x-1=8 90y-90=90 80y-90=70 78y+2y=160 88-x=80 9-4x=1 20x=40 65y-30=100 51y-y=100 85y+1=-86 45x-50=40 +6x=14 x+9x=4+7 2x+9=17 8-4x=6 6x-7=12 7x-9=8 x-56=1 8-7x=1 x-30=12 6x-21=21 6x-3=6 9x=18 4x-18=13 5x+9=11 6-2x=11 x+4+8=23 7x-12=8 X-5.7=2.15 15 5X-2X=18 3X 0.7=5 x+13=33 3 - 5x=80 1.8 +6x=54 6.7x -60.3=6.7 9 +4x =40 2x+8=16 3.5×2= 4.2 x 26×1.5= 2x 0.5×16―16×0.2=4x 9.25-X=0.403 16.9÷X=0.3 X÷0.5=2.6 3-5x=80 1.8-6x=54 6.7x-60.3=6.7 9 +4x=40 0.2x-0.4+0.5=3.7 9.4x-0.4x=16.2 12-4x=20 1/3x+5/6x=1.4 12x+34x=1 18x-14x=12 23 x-5×14=14 12+34x=56 22-14x=12 23x-14x=14 x+14x=65 23x=14x+14 30x12x-14x=1 2x-3=11
第2个回答  2020-09-23

五年级数学解方程的易错题_ev

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