题目内容
| 求求知数的值. 5x-4.5×2=0.5 |
|
|
(1)5x-4.5×2=0.5,
5x-9=0.5,
5x-9+9=0.5+9,
5x=9.5,
5x÷5=9.5÷5,
x=1.9;
(2)
:4=x:
,
4x=
×
,
4x=
,
4x=
÷4,
x=
;
(3)
:x=6,
6x=
,
6x÷6=
÷6,
x=
.
5x-9=0.5,
5x-9+9=0.5+9,
5x=9.5,
5x÷5=9.5÷5,
x=1.9;
(2)
| 1 |
| 3 |
| 4 |
| 5 |
4x=
| 1 |
| 3 |
| 4 |
| 5 |
4x=
| 4 |
| 15 |
4x=
| 4 |
| 15 |
x=
| 1 |
| 15 |
(3)
| 1 |
| 3 |
6x=
| 1 |
| 3 |
6x÷6=
| 1 |
| 3 |
x=
| 1 |
| 18 |
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