±à¼£ºrichie
2023-11-23 04:32:28
±êÌ⣺ÈçºÎ½âÒ»ÔªÒ»´Î·½³Ì×é
Ò»ÔªÒ»´Î·½³Ì×éÊdzõÖÐÊýѧÖÐ×î»ù´¡µÄ´úÊý·½³Ì×éÖ®Ò»¡£Ñ§ºÃ½âÒ»ÔªÒ»´Î·½³Ì×é¶ÔÓÚ½¨Á¢Êýѧ˼άºÍ½â¾öʵ¼ÊÎÊÌâÊÇÖÁ¹ØÖØÒªµÄ¡£±¾ÎĽ«ÎªÄúÏêϸ½éÉÜÈçºÎ½âÒ»ÔªÒ»´Î·½³Ì×éµÄ²½ÖèºÍ¼¼ÇÉ¡£
Ò»ÔªÒ»´Î·½³Ì×éÊÇÓɶà¸öÒ»ÔªÒ»´Î·½³Ì×é³ÉµÄ¼¯ºÏ¡£Ò»ÔªÒ»´Î·½³Ìͨ³£¾ßÓÐÒÔÏÂÐÎʽ£º
ax + b = c
ÆäÖУ¬a¡¢bºÍc¶¼ÊÇÒÑÖªµÄ³£Êý£¬xÊÇδ֪Êý¡£
Òª½â¾öÒ»ÔªÒ»´Î·½³Ì×飬Ê×ÏÈÐèÒª½«ÎÊÌâת»¯Îª·½³Ì×éµÄÐÎʽ¡£½«ÎÊÌâÖеÄÒÑÖªÌõ¼þÓôúÊý±í´ïʽ±íʾ£¬²¢É趨δ֪Êý¡£
ÀýÈ磺
ÒÑÖª£º
·½³Ì1: 2x + 3 = 7
·½³Ì2: 4x - 5 = 3
ÏûÔª·¨ÊǽâÒ»ÔªÒ»´Î·½³Ì×éµÄ³£Ó÷½·¨¡£Í¨¹ýºÏÀíµÄÔËËã²Ù×÷£¬Ê¹µÃδ֪ÊýµÄϵÊýÏàµÈ»ò±¶Êý¹Øϵ£¬´Ó¶ø½«·½³Ì×黯¼òΪֻº¬Ò»¸öδ֪ÊýµÄ·½³Ì¡£
ÀýÈ磺
ͨ¹ý½«·½³Ì1³ËÒÔ2£¬¿É½«·½³Ì1µÄδ֪ÊýϵÊýÓë·½³Ì2µÄδ֪ÊýϵÊýÏàµÈ¡£
2(2x + 3) = 2(7)
4x + 6 = 14
4x - 5 = 3
»¯¼òºóµÄ·½³Ì×éΪ£º
4x + 6 = 14
4x - 5 = 3
ͨ¹ý¼ÌÐøÏûÔª²Ù×÷£¬½«·½³Ì×é½øÒ»²½»¯¼òΪֻº¬Ò»¸öδ֪ÊýµÄ·½³Ì£¬²¢Çó½â³ö¸Ãδ֪ÊýµÄÖµ¡£
ÀýÈ磺
ͨ¹ý½«·½³Ì1³ËÒÔ5£¬½«·½³Ì2³ËÒÔ6£¬¿É½«·½³Ì2µÄδ֪ÊýµÄϵÊýµ÷ÕûΪ¸º·½³Ì1µÄϵÊýµÄ±¶Êý¡£
5(4x + 6) = 5(14)
6(4x - 5) = 6(3)
»¯¼òºóµÄ·½³Ì×éΪ£º
20x + 30 = 70
24x - 30 = 18
ͨ¹ý¼ÌÐø½øÐÐÏûÔª¼ÆË㣬×îÖյõ½£º
x = 2
×îºóÒ»²½ÊÇÑéÖ¤ÇóµÃµÄ½âÊÇ·ñÂú×ãÔʼ·½³Ì×é¡£½«½â´úÈë·½³Ì×éµÄËùÓз½³Ì£¬È·ÈϵÈʽÊÇ·ñ³ÉÁ¢¡£
ÀýÈ磬ÔÚ±¾ÀýÖУ¬½«xµÄÖµ´úÈëÔʼ·½³Ì×飺
·½³Ì1: 2(2) + 3 = 7
·½³Ì2: 4(2) - 5 = 3
¼ÆËãºó¿ÉµÃµ½£º
7 = 7
3 = 3
Òò´Ë£¬½âx = 2Âú×ãÔʼ·½³Ì×é¡£
½âÒ»ÔªÒ»´Î·½³Ì×éÊÇÊýѧѧϰÖеĻù´¡¼¼ÄÜÖ®Ò»¡£Í¨¹ýºÏÀíÔËÓÃÏûÔª·¨ºÍ´úÈë·¨£¬¿ÉÒÔÓÐЧ½â¾öÒ»ÔªÒ»´Î·½³Ì×é¡£ÔÚ½âÌâ¹ý³ÌÖУ¬ÐèҪעÒâÿһ²½ÖèµÄÕýÈ·ÐÔ£¬²¢×îÖÕÑéÖ¤½âµÄÕýÈ·ÐÔ¡£
Ï£Íû±¾ÎÄÄܹ»¶ÔÄúÀí½âºÍÕÆÎÕÈçºÎ½âÒ»ÔªÒ»´Î·½³Ì×éÓÐËù°ïÖú¡£ÕÆÎÕÕâÒ»¼¼Çɽ«ÎªÄúÔÚÊýѧѧϰºÍ½â¾öʵ¼ÊÎÊÌâÖÐÌṩ¸ü¶à¿ÉÄÜÐÔ¡£
ÈçºÎ¸øÖп¼ÊýѧÖеÈˮƽѧÉú¸´Ï°½²×ùppt
2023-11-23 00:19:01¾«Æ·Ñ§Ï°Íø(51edu.com)ÔÚ½¨Éè¹ý³ÌÖÐÒýÓÃÁË»¥ÁªÍøÉϵÄһЩÐÅÏ¢×ÊÔ´²¢¶ÔÓÐÃ÷È·À´Ô´µÄÐÅÏ¢×¢Ã÷Á˳ö´¦£¬°æȨ¹éÔ×÷Õß¼°ÔÍøÕ¾ËùÓУ¬Èç¹ûÄú¶Ô±¾Õ¾ÐÅÏ¢×ÊÔ´°æȨµÄ¹éÊôÎÊÌâ´æÓÐÒìÒ飬ÇëÄúÖÂÐÅqinquan#51edu.com(½«#»»³É@)£¬ÎÒÃÇ»áÁ¢¼´×ö³ö´ð¸´²¢¼°Ê±½â¾ö¡£Èç¹ûÄúÈÏΪ±¾Õ¾ÓÐÇÖ·¸ÄúȨÒæµÄÐÐΪ£¬Çë֪ͨÎÒÃÇ£¬ÎÒÃÇÒ»¶¨¸ù¾Ýʵ¼ÊÇé¿ö¼°Ê±´¦Àí¡£