Question

помогите1!1!1!1!!1!1!1!1!!1!1!1!1!1?1!1!​

Answer 1

Р=а+а+а+а

Р=4а

4 а=18 2/5

а=18 2/5 : 4

а = 92/5:4

а = (92/5)*(1/4)

а=23/5

а=4 3/5

Ответ: 4 3/5