Question

решить уровнение (4х+5)/13=8/9

Answer 1

[ 4x + 5 ] ; 13 = 89
413x + 513 = 89
413 x = 89 - 513 = 104117 - 45117 = 59117        413x + 513 = 89
x = 59117 ; 413 = 59117 x 134 = 5936 = 1 2336 
x = 1 2336
[4 x 1 2336 + 5 ]; 13=89  1 2336 = 5936-проверка
4 x 5936 + 5 = 599 + 5 = 6 59 + 5 = 11 59
11 59 ; 13 =1049 x 113 = 89   89 = 89