问题 解答题
解比例.
x:14=6:28         
 
3
8
1
3
=x:
1
6
0.7
X
=14:5.
答案

(1)x:14=6:28,

          28x=14×6,

      28x÷28=84÷28,

            x=3;

(2)

3
8
1
3
=x:
1
6

       

1
3
x=
3
8
×
1
6

     

1
3
x÷
1
3
=
1
16
÷
1
3

          x=

3
16

(3)

0.7
x
=14:5,

     14x=0.7×5,

 14x÷14=3.5÷14,

       x=0.25.

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