Question

Ma puteti ajuta va rog frumos sa rezolv sistemul : x+y=100 si x/2-y/2=15 . Va rog frumos si mersi anticipat!!!

Answer 1

x+y=100
$\frac{x-y}{2}$=15 => x-y=30 => x=y+30
x+y=100 => y+30+y=100 => 2y=70 => y=35
x=35+30=65