Question

пожалуйтса помогите если не сложно

Answer 1

Пошаговое объяснение:

$3) \: \: ( \frac{31}{59} - x) + \frac{2}{59} = \frac{18}{59} \\ \frac{31}{59} - x = \frac{18}{59} - \frac{2}{59} \\ \frac{31}{59} - x = \frac{16}{59} \\ x = \frac{31}{59} - \frac{16}{59} \\ x = \frac{15}{59}$

$4) \: \: \frac{40}{71} - ( \frac{12}{71} + x) = \frac{20}{71} \\ \frac{12}{71} + x = \frac{40}{71} - \frac{20}{71} \\ \frac{12}{71} + x = \frac{20}{71} \\ x = \frac{20}{71} - \frac{12}{71} \\ x = \frac{8}{71}$