Question

Ma ajuta cineva repede va rog?!!

Answer 1

$x = numarul \\ y = cealalt \: numar \\ x = 3 \times y$

$x + y = 40$

inlocuim in formula:

$3 \times y + y = 40 \\ 4y = 40 \\ y = 40 \div 4 \\ y = 10 \\ x = 3 \times y \\ x = 3 \times 10 \\ x = 30$

verificare:

30+10=40