Question

suma a trei nr naturale consecutive este 30 .afati nr

Answer 1

$a+a+1+a+2=30$
$3a+3=30$
$3a=30-3$
$3a=28$
$a=27:3$
$a=9$
$b=9+1$
$b=10$
$c=9+2$
$c=11$