Question

Розв’яжіть рівняння:

Answer 1

$y - \dfrac{8}{15} y = \dfrac{1}{3}\\\\\\\dfrac{15y}{15} - \dfrac{8y}{15} = \dfrac{1}{3}\\\\\\\dfrac{15y - 8y}{15} = \dfrac{1}{3}\\\\\\\dfrac{7y}{15} = \dfrac{1}{3}\ \ \ \ \ \Big| \cdot 15\\\\\\7y = \dfrac{15}{3}\\\\7y = 5\ \ \ \ \ \Big| :7\\\\\\\boxed{y = \dfrac{5}{7}}$