Решите ур-е: 3 1/2:х=5 4/7:18/37
X x 5 4\7 = 3 1\2 x 18\37 x = 3 1\2 x 18\37 ; 5 4\7 3 1\2 x 18\37 =7\2 x 18\37 =63\37 =1 26\37 1 26\37 ; 5 4\7 = 63\37 x7\39 =147\481 x = 147\481