题目内容

3x:64=
7
8
:4
x:35=
2
5
:7
4x-6
5
=
3x-1
4
2
x+1
=
1
3x
x:6=3:3
3
5
3
20
:180%=
6.5
x
x:8=
3
5
:1
1
5
(3x-5):(x-
1
3
)=3:2
4
9
:x=0.5:9
12:x=
2
1.5
10:x=4
1
2
4
5
19:5
7
10
=60%:x
3
4
:x=
5
16
1
4
x
24
=
0.5
3
(
4
7
x):
2
3
=4:7
(1)3x:64=
7
8
:4,
12x=64×
7
8

12x÷12=56÷12,
x=4
3
4


(2)x:35=
2
5
:7,
7x=35×
2
5

7x÷7=14÷7,
x=2;

(3)
4x-6
5
=
3x-1
4

16x-24=15x-5,
16x-24+24=15x-5+24,
16x-15x=15x+19-15x,
x=19;

(4)
2
x+1
=
1
3x

6x=x+1,
6x-x=x+1-x,
5x÷5=1÷5,
x=
1
5


(5)x:6=3:3
3
5

3
3
5
x=6×3,
3
3
5
x÷3
3
5
=18÷3
3
5

x=5;

(6)
3
20
:180%=
6.5
x

3
20
x=180%×6.5,
3
20
x÷
3
20
=11.7÷
3
20

x=78;

(7)x:8=
3
5
:1
1
5

1
1
5
x=8×
3
5

1
1
5
x÷1
1
5
=
24
5
÷1
1
5

x=4;

(8)(3x-5):(x-
1
3
)=3:2,
6x-10=3x-1,
6x-10+10=3x-1+10,
6x-3x=3x+9-3x,
3x÷3=9÷3,
x=3;

(9)
4
9
:x=0.5:9,
0.5x=
4
9
×
9,
0.5x÷0.5=4÷0.5,
x=8;

(10)12:x=
2
1.5

2x=12×1.5,
2x÷2=18÷2,
x=9;

(11)10:x=4
1
2
4
5

4
1
2
x=10×
4
5

4
1
2
x÷4
1
2
=8÷4
1
2

x=1
7
9


(12)19:5
7
10
=60%:x,
19x=5
7
10
×60%,
19x÷19=
57
25
÷19,
x=
3
25


(13)
3
4
:x=
5
16
1
4

5
16
x=
3
4
×
1
4

5
16
x÷
5
16
=
3
16
÷
5
16

x=
3
5


(14)
x
24
=
0.5
3

3x=24×0.5,
3x÷3=12÷3,
x=4;

(15)(
4
7
x):
2
3
=4:7

4
7
x×7=
2
3
×
4,
4x÷4=
8
3
÷
4,
x=
2
3
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