题目内容
求未知数x
5x-4.5×2=0.5
:
=X:9.
5x-4.5×2=0.5
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(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)
:
=X:9,
X=
×9,
X=6,
X÷
=6÷
,
X=6×
,
X=
.
5x-9=0.5,
5x-9+9=0.5+9,
5x=9.5,
5x÷5=9.5÷5,
x=1.9;
(2)
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X=6×
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X=
| 36 |
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