题目内容
解方程.
①5+0.7x=103
②x:
=2:
.
①5+0.7x=103
②x:
| 3 |
| 5 |
| 1 |
| 3 |
①5+0.7x=103,
5+0.7x-5=103-5,
0.7x=98,
0.7x÷0.7=98÷0.7,
x=140;
②x:
=2:
,
x=
×2,
x=
,
x×3=
×3,
x=
.
5+0.7x-5=103-5,
0.7x=98,
0.7x÷0.7=98÷0.7,
x=140;
②x:
| 3 |
| 5 |
| 1 |
| 3 |
| 1 |
| 3 |
| 3 |
| 5 |
| 1 |
| 3 |
| 6 |
| 5 |
| 1 |
| 3 |
| 6 |
| 5 |
x=
| 18 |
| 5 |
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