题目内容
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| 4 |
12:
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| 1 |
| 2 |
(1)
x+5×4=95,
x+20=95,
x+20-20=95-20,
x=75,
x×
=75×
,
x=100;
(2)12:
=x:
,
x=12×
,
x=6,
x×
=6×
,
x=10.
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x=100;
(2)12:
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| 5 |
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x=10.
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