题目内容
求未知数x的值.
| 0.3x+7x-0.25x=35.25 |
|
(1)0.3x+7x-0.25x=35.25,
7.05x=35.25,
7.05x÷7.05=35.25÷7.05,
x=5;
(2)
:0.05=1
:x,
x=0.05×1
,
x=
,
x÷
=
÷
,
x=
.
7.05x=35.25,
7.05x÷7.05=35.25÷7.05,
x=5;
(2)
| 2 |
| 3 |
| 7 |
| 9 |
| 2 |
| 3 |
| 7 |
| 9 |
| 2 |
| 3 |
| 4 |
| 45 |
| 2 |
| 3 |
| 2 |
| 3 |
| 4 |
| 45 |
| 2 |
| 3 |
x=
| 2 |
| 15 |
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