题目内容
解比例.
(1)
=
;
(2)
:x=
:
;
(3)8:x=
:
.
(1)
| 4.5 |
| x |
| 6 |
| 2.2 |
(2)
| 1 |
| 10 |
| 1 |
| 8 |
| 1 |
| 4 |
(3)8:x=
| 4 |
| 5 |
| 3 |
| 4 |
(1)
=
6x=4.5×2.2
6x÷6=9.9÷6
x=1.65;
(2)
:x=
:
x=
×
x÷
=
÷
x=
;
(3)8:x=
:
x=8×
x÷
=6÷
x=7.5.
| 4.5 |
| x |
| 6 |
| 2.2 |
6x=4.5×2.2
6x÷6=9.9÷6
x=1.65;
(2)
| 1 |
| 10 |
| 1 |
| 8 |
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 10 |
| 1 |
| 4 |
| 1 |
| 8 |
| 1 |
| 8 |
| 1 |
| 40 |
| 1 |
| 8 |
x=
| 1 |
| 5 |
(3)8:x=
| 4 |
| 5 |
| 3 |
| 4 |
| 4 |
| 5 |
| 3 |
| 4 |
| 4 |
| 5 |
| 4 |
| 5 |
| 4 |
| 5 |
x=7.5.
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