<br /><br /><br /><font size="5"> </font><font size="5"><font face="Times New Roman">小邊 小邊 30-(-3) X-0<br />-------- = --------- 所以 ------------- = ------------<br /> 大邊 大邊 107-(-3) 100<br /><br /><br />求出 X = 30 <br /><br />故原溫度應為30<span style="FONT-SIZE: 16pt; FONT-FAMILY: 新細明體; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-TW; mso-bidi-language: AR-SA">℃<br /></span></font></font><!-- more -->