要用一元一次方程解,必須要有過程,
題目:
要用一元一次方程解,必須要有過程,
解答:
設還需x小時可注滿水池.
x/6=1-(1/6-1/8)*(40/60)
x/6=1-(4/24-3/24)*(2/3)
x/6=1-(1/24)*(2/3)
x/6=1-1/36
x/6=35/36
x=35/6
答:還需35/6小時可注滿水池.
再問: 設還需x小時可注滿水池。 x/6=1-(1/6-1/8)*(40/60) x/6=1-(4/24-3/24)*(2/3) x/6=1-(1/24)*(2/3) x/6=1-1/36 x/6=35/36 x=35/6 答:還需35/6小時可注滿水池。
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