Решите пожалуйста два уравнения: а) а : 3 + 400 = 600 б) (500 - х ) * 6 = 120

а) а : 3 + 400 = 600                             б) (500 - х) * 6 = 120а : 3 = 600 - 400                                       500 - х = 120 : 6а : 3 = 200                                                500 - х = 20   а = 200 * 3                                                х = 500 - 20а = 600                                                     х = 480Проверка: 600 : 3 + 400 = 600               Проверка: (500 - 480) * 6 = 120                   200 + 400 = 600                                       20 * 6 = 120                                 600 = 600                                                 120 = 120 

а) 600:3+400=600 600:3=200 200+400=600 б) (500-480)*6=120 500-480=20 20*6=120