题目内容
求未知数x
x:
| (4+
|
(1)x:
=
:8,
8x=
×
,
8x÷8=
÷8,
x=
;
(2)(4+
)x=3.5×1.2,
4.2x=4.2,
4.2x÷4.2=4.2÷4.2,
x=1.
| 1 |
| 2 |
| 1 |
| 5 |
8x=
| 1 |
| 2 |
| 1 |
| 5 |
8x÷8=
| 1 |
| 10 |
x=
| 1 |
| 80 |
(2)(4+
| 1 |
| 5 |
4.2x=4.2,
4.2x÷4.2=4.2÷4.2,
x=1.
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