题目内容
解方程.
x+
=
6x-2.4x=72.
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6x-2.4x=72.
(1)
x+
=
,
x+
-
=
-
,
x=
,
x÷
=
÷
,
x=
;
(2)6x-2.4x=72,
3.6x=72,
3.6x÷3.6=72÷3.6,
x=20.
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x=
| 1 |
| 3 |
(2)6x-2.4x=72,
3.6x=72,
3.6x÷3.6=72÷3.6,
x=20.
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