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請幫我解以下方程。詳細列出部
{【(1.6A)(240-X)-(A)(240)】÷(A)(240) }×100% =【(1.21-1)÷1】×100﹪
X =?
回答 (2)
{【(1.6A)(240-X)-(A)(240)】÷【(A)(240)】 }×100% =【(1.21-1)÷1】×100﹪
【(1.6)(240-X)-240】÷(240) = 0.21
(1.6)(240-X)-240 = 240(0.21)
384 - 1.6X = 240 + 50.4
384 - 1.6X = 290.4
-1.6X = 290.4 - 384
-1.6X = -93.6
X = -93.6/(-1.6)
X = 58.5
參考: me
{【(1.6A)(240-X)-(A)(240)】÷【(A)(240)】 }×100% =【(1.21-1)÷1】×100﹪
【(1.6)(240-X)-240】÷(240) = 0.21
(1.6)(240-X)-240 = 240(0.21)
384 - 1.6X = 240 + 50.4
384 - 1.6X = 290.4
-1.6X = 290.4 - 384
-1.6X = -93.6
X = -93.6/(-1.6)
X = 58.5
收錄日期: 2021-04-12 22:46:33
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070206000051KK02639
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