题目内容
解方程:
(1)
x+
x=84
(2)
=
.
(1)
| 2 |
| 3 |
| 1 |
| 2 |
(2)
| x |
| 2.4 |
| 15 |
| 0.8 |
(1)
x+
x=84,
x=84,
x÷
=84÷
,
x=72;
(2)
=
,
0.8x=2.4×15,
0.8x÷0.8=36÷0.8,
x=45.
| 2 |
| 3 |
| 1 |
| 2 |
| 7 |
| 6 |
| 7 |
| 6 |
| 7 |
| 6 |
| 7 |
| 6 |
x=72;
(2)
| x |
| 2.4 |
| 15 |
| 0.8 |
0.8x=2.4×15,
0.8x÷0.8=36÷0.8,
x=45.
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