题目内容
求未知数x
3.2+9x=5
x-
x=
x:
=
:
.
3.2+9x=5
x-
| 1 |
| 5 |
| 3 |
| 10 |
x:
| 4 |
| 5 |
| 5 |
| 12 |
| 1 |
| 6 |
①3.2+9x=5,
3.2+9x-3.2=5-3.2,
9x÷9=1.8÷9,
x=0.2;
②x-
x=
,
x÷
=
÷
,
x=
;
③x:
=
:
,
x=
×
,
x÷
=
÷
,
x=2.
3.2+9x-3.2=5-3.2,
9x÷9=1.8÷9,
x=0.2;
②x-
| 1 |
| 5 |
| 3 |
| 10 |
| 4 |
| 5 |
| 4 |
| 5 |
| 3 |
| 10 |
| 4 |
| 5 |
x=
| 3 |
| 8 |
③x:
| 4 |
| 5 |
| 5 |
| 12 |
| 1 |
| 6 |
| 1 |
| 6 |
| 4 |
| 5 |
| 5 |
| 12 |
| 1 |
| 6 |
| 1 |
| 6 |
| 1 |
| 3 |
| 1 |
| 6 |
x=2.
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