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1. ãËéà¢Õ¹ÅӴѺ¢Ñ鹵͹¡ÒûÃÐÁÇżŢͧ¹Ô¾¨¹ì –(5+4)*21/3=-36
¢Ñ鹵͹·Õè 1……………………………………………………………………………………
¢Ñ鹵͹·Õè 2……………………………………………………………………………………
¢Ñ鹵͹·Õè 3……………………………………………………………………………………
¢Ñ鹵͹·Õè 4……………………………………………………………………………………

2. ãËéà¢Õ¹ÅӴѺ¢Ñ鹵͹¡ÒûÃÐÁÇżŢͧ¹Ô¾¨¹ì 2*((12/4)+20)-35/7= 41
¢Ñ鹵͹·Õè 1……………………………………………………………………………………
¢Ñ鹵͹·Õè 2……………………………………………………………………………………
¢Ñ鹵͹·Õè 3……………………………………………………………………………………
¢Ñ鹵͹·Õè 4……………………………………………………………………………………
¢Ñ鹵͹·Õè 5……………………………………………………………………………………

3. ãËéà¢Õ¹â»Ãá¡ÃÁ¹Ô¾¨¹ìã¹¢éÍ 1 áÅТéÍ 2 à¾×èÍËÒ¼ÅÅѾ¸ì
áÅéÇ·Ó¡Òúѹ·Ö¡ä¿Åì´éÇ¡ÒäÅÔ¡àÁÒÊì·ÕèàÁ¹Ù File áÅéÇàÅ×Í¡¤ÓÊÑè§ Save ËÃ×Í¡´»ØèÁ F2 áÅéÇãÊèª×èÍä¿Åì result

              

4. ãËé¾ÔÁ¾ìâ»Ãá¡ÃÁà¾×èÍËÒ¤èÒ 42x+7(4-2y) â´ÂÃѺ¤èÒ x áÅÐ y ¨Ò¡á»é¹¾ÔÁ¾ì áÅéÇ·Ó¡Òúѹ·Ö¡ä¿Åì´éÇ¡ÒäÅÔ¡àÁÒÊì·ÕèàÁ¹Ù File áÅéÇàÅ×Í¡¤ÓÊÑè§ Save ËÃ×Í¡´»ØèÁ F2 áÅéÇãÊèª×èÍä¿Åì equation_01

           

5. ¶éÒ»é͹¤èÒ x à»ç¹ 2 áÅлé͹¤èÒ y à»ç¹ 2 ¤èÒ z ÁÕ¤èÒà·èҡѺ…………………………………………

6. ¶éÒ⨷Âìà»ÅÕè¹à»ç¹ 20(10/5)x+(8/4)y ¨Ðà¢Õ¹â»Ãá¡ÃÁã¹ÅѡɳÐÍÂèÒ§äÃ
áÅéÇ·Ó¡Òúѹ·Ö¡ä¿Åì´éÇ¡ÒäÅÔ¡àÁÒÊì·ÕèàÁ¹Ù File áÅéÇàÅ×Í¡¤ÓÊÑè§ Save ËÃ×Í¡´»ØèÁ F2 áÅéÇãÊèª×èÍä¿Åì equation_02