Report copyright - ç ÜDı CH.15 ’“ ÒCH15–Q7 (c) J 1 …„Ñ'¾ÀP, ~‰*¥v¨íœ}A– kÖ ý? I 20Q 1 +30Q 2 = 150 (24 X) ) 20Q 1 +30Q 2 +150X = 3600 ) Q 1 +1:5Q 2 +7:5X = 180 I Ó‰łÀP*¥íœ}A–:
Please pass captcha verification before submit form
Please pass captcha verification before submit form