题目内容

解比例.
X:14=6:28

0.75
x
=
0.25
3
3
8
1
3
=x:
1
6
0.5:0.25=x:6
x
0.08
=
2
0.4
1
3
:x=4:12
(1)X:14=6:28,
28X=14×6,
28X=84,
x=3;

(2)
0.75
x
=
0.25
3

0.25x=0.75×3,
0.25x=2.25,
x=9;

(3)
3
8
1
3
=x:
1
6

1
3
x=
3
8
×6,
1
3
x=
9
4

x=
27
4


(4)0.5:0.25=x:6,
0.25x=0.5×6,
0.25x=3,
x=12;

(5)
x
0.08
=
2
0.4

0.4x=2×0.08,
0.4x=0.16,
x=0.4;

(6)
1
3
:x=4:12,
4x=
1
3
×
12,
4x=4,
x=1.
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