题目内容
求x
| 6x-3.4=15.8 |
|
|
(l)6x-3.4=15.8,
6x-3.4+3.4=15.8+3.4,
6x=19.2,
6x÷6=19.2÷6,
x=3.2;
(2)
+
x=3.5,
+
x-
=3.5-
,
x=
,
x÷
=
÷
,
x=
;
(3)
:x=
:2,
x=
,
x÷
=
÷
,
x=
.
6x-3.4+3.4=15.8+3.4,
6x=19.2,
6x÷6=19.2÷6,
x=3.2;
(2)
| 5 |
| 7 |
| 6 |
| 7 |
| 5 |
| 7 |
| 6 |
| 7 |
| 5 |
| 7 |
| 5 |
| 7 |
| 6 |
| 7 |
| 39 |
| 14 |
| 6 |
| 7 |
| 6 |
| 7 |
| 39 |
| 14 |
| 6 |
| 7 |
x=
| 13 |
| 4 |
(3)
| 4 |
| 5 |
| 2 |
| 9 |
| 2 |
| 9 |
| 8 |
| 5 |
| 2 |
| 9 |
| 2 |
| 9 |
| 8 |
| 5 |
| 2 |
| 9 |
x=
| 36 |
| 5 |
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