题目内容
求未知数x的值.
(1)
×
-2x=
(2)6:x=
:
(3)
=6:1.5.
(1)
| 4 |
| 5 |
| 1 |
| 2 |
| 1 |
| 5 |
(2)6:x=
| 5 |
| 6 |
| 1 |
| 3 |
(3)
| 1.2 |
| x |
(1)
×
-2x=
,
-2x+2x=
+2x,
-
=
+2x-
,
=2x,
÷2=2x÷2,
x=
;
(2)6:x=
:
,
x=6×
,
x÷
=2÷
,
x=2.4;
(3)
=6:1.5,
6x=1.2×1.5,
6x=1.8,
6x÷6=1.8÷6,
x=0.3.
| 4 |
| 5 |
| 1 |
| 2 |
| 1 |
| 5 |
| 2 |
| 5 |
| 1 |
| 5 |
| 2 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
| 1 |
| 5 |
x=
| 1 |
| 10 |
(2)6:x=
| 5 |
| 6 |
| 1 |
| 3 |
| 5 |
| 6 |
| 1 |
| 3 |
| 5 |
| 6 |
| 5 |
| 6 |
| 5 |
| 6 |
x=2.4;
(3)
| 1.2 |
| x |
6x=1.2×1.5,
6x=1.8,
6x÷6=1.8÷6,
x=0.3.
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