Question

Diferenta a doua numere este dublul treimii primului numar.Afla numerele stiind ca suma lor este 72

Answer 1

$a-b=2* \frac{a}{3} \\\\ a^{(3}-\frac{2a}{3}=b^{(3} \\\\ 3a-2a=3b \\\\ a=3b \\\\\\ a+b=72 \\\\ 3b+b=72 \\\\ 4b=72 \ \ \ |:4 \\\\ \boxed{b=18} \\\\\\ a=3*18 \\\\ \boxed{a=54}$