Уравнение (4 2/21 -х)*21=58

Question

Уравнение (4 2/21 -х)*21=58

Answer 1

1) (4 2/21-х) * 21 = 58 ; (86 /21 -х)*21=58 ; 86 - 21х= 58; 86-58=21х; 28=21х; 28/21=х; х= 1 1/3.