题目内容
解比例. x:14=6:28 |
|
|
(1)x:14=6:28,
28x=14×6,
28x÷28=84÷28,
x=3;
(2)
:
=x:
,
x=
×
,
x÷
=
÷
,
x=
;
(3)
=14:5,
14x=0.7×5,
14x÷14=3.5÷14,
x=0.25.
28x=14×6,
28x÷28=84÷28,
x=3;
(2)
3 |
8 |
1 |
3 |
1 |
6 |
1 |
3 |
3 |
8 |
1 |
6 |
1 |
3 |
1 |
3 |
1 |
16 |
1 |
3 |
x=
3 |
16 |
(3)
0.7 |
x |
14x=0.7×5,
14x÷14=3.5÷14,
x=0.25.
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