Question

найдите корень уравнения (5d)\9 + 2 = 1\3

Answer 1

(5х) / 9 + 2 = 1/3
(5х) /9 = 1/3 - 2
(5х) /9 = - 5/3
5х = -5/3 х 9
5х = - 15
х = - 15 : 5
х = - 3