Question

Cum se face aceasta ecuatie ? :
X + 6 supra 2 + 15 = 30

Answer 1

$\rm \frac{x+6}{2}+15=30 \\ \\ \frac{x+6}{2}=30-15 \\ \\ \frac{x+6}{2}=15~|*2 \\ \\ x+6=15*2 \\ \\ x+6=30~|-6 \\ \\ x=30-6 \\ \\ \boxed{x=24}$