146-(46+х) при х = 47 (7у-2у)*26=1300
146 - ( 46 + 47 ) = 146 - 93 = 53 ( 7y - 2y ) *26 = 1300 5y = 1300 : 26 5 y = 50 y = 50 : 5 y = 10
Пасибки :)