Nanalia Tuzina
Мудрец
(10759)
3 года назад
F*5 - M - R(B)*(5+5+5) = 0
60*5 - 45 - 15*R(B) = 0 -------> R(B) = (300-45)\15 = 17
-R(A)*(5+5+5) + F*(5+5) + M = 0
-15*R(B) + 60*10 + 45 = 0 -----> R(A) = (600+45)\15 = 43
Проверка:
F = R(A) + R(B)
60 = 17+43
60 = 60