题目内容
解方程.
=
x+
x=18.
| 3 |
| x |
| 17 |
| 51 |
x+
| 3 |
| 7 |
(1)
=
,
17x=3×51,
17x÷17=153÷17,
x=9;
(2)x+
x=18,
x=18,
x×
=18×
,
x=12
.
| 3 |
| x |
| 17 |
| 51 |
17x=3×51,
17x÷17=153÷17,
x=9;
(2)x+
| 3 |
| 7 |
| 10 |
| 7 |
| 10 |
| 7 |
| 7 |
| 10 |
| 7 |
| 10 |
x=12
| 3 |
| 5 |
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