题目内容
解比例
| (1)x:3=24:8 | (2)
| (3)3:4=
| (4)
|
(1)x:3=24:8
8x=3×24,
8x÷8=72÷8,
x=9;
(2)
:x=15:
,
15x=
×
,
15x÷15=
÷15,
x=
;
(3)3:4=
,
4x=3×24,
4x÷4=72÷4,
x=18;
(4)
=4:x,
8x=9×4,
8x÷8=36÷8,
x=4.5.
8x=3×24,
8x÷8=72÷8,
x=9;
(2)
| 5 |
| 8 |
| 3 |
| 4 |
15x=
| 5 |
| 8 |
| 3 |
| 4 |
15x÷15=
| 15 |
| 32 |
x=
| 1 |
| 32 |
(3)3:4=
| x |
| 24 |
4x=3×24,
4x÷4=72÷4,
x=18;
(4)
| 8 |
| 9 |
8x=9×4,
8x÷8=36÷8,
x=4.5.
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