#1
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#2
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äÁèà¢éÒã¨ÍèÐ ¶éÒàÃÕ§¨Ò¡ÁÒ¡ä»ËÒ¹éÍÂáÅéÇ·ÓäÁ¼ÅºÇ¡2µÑÇáá¶Ö§ä´é¼ÅÅѾ¸ì¹éÍ¡ÇèÒÊͧµÑÇËÅѧ
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#3
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¼Á¤Ô´ä´é¢éÍÁÙÅà»ç¹ 20,30,30,45,60 ¤ÃѺ
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ËÁÑè¹½Ö¡½¹µ¹àͧà»ç¹»ÃÐ¨Ó áÁéµÃÒ¡µÃÓ¡çµéͧÂÍÁÊÙé½Ö¡½¹ áÁéà˹×èÍÂÂÒ¡àÃÒ¡çµéͧà½éÒÍ´·¹ à¾×èÍà»ç¹¼Å§Í¡§ÒÁÂÒÁ¾ºªÑ "¤ÇÒÁ¾ÂÒÂÒÁÍÂÙè·Õèä˹¤ÇÒÁÊÓàÃç¨ÍÂÙè·Õè¹Ñè¹" Fit for Math!!! |
#4
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¢éÍÁÙÅÁÕ 5 ¨Ó¹Ç¹ A, B, C, D, E
¤èÒà©ÅÕèÂà·èҡѺ 37 ´Ñ§¹Ñé¹ A + B + C + D + E = 5 x 37 = 185 A+B = 50 áÅÐ D+E = 105 ´Ñ§¹Ñé¹ C = 185 - (A + B) - (D + E) = 30 = ÁѸ°ҹ ÁѸ°ҹà·èҡѺ°Ò¹¹ÔÂÁ ´Ñ§¹Ñé¹ °Ò¹¹ÔÂÁ = 30 ¨Ðä´é B = C = 30 (D=C äÁèä´é à¾ÃÒШзÓãËé E = 75 áÅÐ A = 35 «Öè§ÁÒ¡¡ÇèÒ C) A + B = 50 ---> A = 20 ¾ÔÊÑ 40 ´Ñ§¹Ñé¹ E - A = 40 ---> E = 60 D + E = 105 ´Ñ§¹Ñé¹ D = 45 ¢éÍÁÙŪش¹Õé¤×Í 20, 30, 30, 45, 60
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#5
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