题目内容
求未知数X
4.5X÷3=2.25
X-
X=8.5
0.5:
=
X.
4.5X÷3=2.25
X-
| 3 |
| 20 |
0.5:
| 1 |
| 4 |
| 2 |
| 3 |
(1)4.5X÷3=2.25,
4.5X÷3×3=2.25×3,
4.5x÷4.5=6.75÷4.5,
x=1.5;
(2)X-
X=8.5,
x=8.5,
x÷
=8.5÷
,
x=10;
(3)0.5:
=
X,
×
x=0.5×1,
x÷
=0.5÷
,
x=3.
4.5X÷3×3=2.25×3,
4.5x÷4.5=6.75÷4.5,
x=1.5;
(2)X-
| 3 |
| 20 |
| 17 |
| 20 |
| 17 |
| 20 |
| 17 |
| 20 |
| 17 |
| 20 |
x=10;
(3)0.5:
| 1 |
| 4 |
| 2 |
| 3 |
| 1 |
| 4 |
| 2 |
| 3 |
| 1 |
| 6 |
| 1 |
| 6 |
| 1 |
| 6 |
x=3.
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