题目内容
解方程:
=7.5:12
50%×5-
X=0.6.
| 2.5 |
| X |
50%×5-
| 3 |
| 4 |
(1)
=7.5:12,
7.5x=2.5×12,
7.5x=30,
7.5x÷7.5=30÷7.5,
x=4;
(2)50%×5-
x=0.6,
2.5-
x=0.6,
0.6+
x=2.5,
0.6+
x-0.6=2.5-0.6,
x=
,
x÷
=
÷
,
x=2
.
| 2.5 |
| x |
7.5x=2.5×12,
7.5x=30,
7.5x÷7.5=30÷7.5,
x=4;
(2)50%×5-
| 3 |
| 4 |
2.5-
| 3 |
| 4 |
0.6+
| 3 |
| 4 |
0.6+
| 3 |
| 4 |
| 3 |
| 4 |
| 19 |
| 10 |
| 3 |
| 4 |
| 3 |
| 4 |
| 19 |
| 10 |
| 3 |
| 4 |
x=2
| 8 |
| 15 |
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