x/180+x/150=11/5
11X/900=11/5
X=180
(X/3)÷60+(2X/3)÷100=2.2
(X/3)÷60+(2X/3)÷100=2.2
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幫下 快
數(shù)學(xué)人氣:434 ℃時間:2020-02-04 05:30:41
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