题目内容
解比例:
(1)
=
(2)
:x=0.8:15.
(1)
| 1.2 |
| 5 |
| x |
| 10 |
(2)
| 2 |
| 3 |
(1)
=
,
5x=1.2×10,
5x÷5=12÷5,
x=2.4;
(2)
:x=0.8:15,
0.8x=
×15,
0.8x=10,
0.8x÷0.8=10÷0.8,
x=12.5.
| 1.2 |
| 5 |
| x |
| 10 |
5x=1.2×10,
5x÷5=12÷5,
x=2.4;
(2)
| 2 |
| 3 |
0.8x=
| 2 |
| 3 |
0.8x=10,
0.8x÷0.8=10÷0.8,
x=12.5.
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