Question

Exercitiul 25 urgent ! Dau coroana ! Va rog urgent !

Answer 1

$b = 3 \times f \\ b - f = 90 \\ b = 90 - f \\ 3 \times f = 90 + f \\ 3 \times f - f = 90 \\ 2 \times f = 90 \\ f = 45 (fete) \\ b = 3 \times 45 = 135(baieti)$