题目内容
求未知数x
(1)(2x-1)÷3=
(2)
:x=
:6.
(1)(2x-1)÷3=
| 1 |
| 2 |
(2)
| 3 |
| 8 |
| 1 |
| 12 |
(1)(2x-1)÷3=
2x-1=
×3,
2x=
+1,
x=
×
,
x=1
;
(2)
:x=
:6
x=
×6,
x=
×6×12,
x=27.
| 1 |
| 2 |
2x-1=
| 1 |
| 2 |
2x=
| 3 |
| 2 |
x=
| 5 |
| 2 |
| 1 |
| 2 |
x=1
| 1 |
| 4 |
(2)
| 3 |
| 8 |
| 1 |
| 12 |
| 1 |
| 12 |
| 3 |
| 8 |
x=
| 3 |
| 8 |
x=27.
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