Question

suma dintre jumatatea unui nr si triplul sau e 35
Numarul este??Va rog dau coroana sau funda

Answer 1

a/2+3a=35 I *2
2a/2+6a=70
a+6a=70
7a=70
a=70:7
a=10

Answer 2

$\frac{a}{2}+3a=35$
$Amplificam~cu~2$
$a+6a=70$
$7a=70$
$a=70:7$
$\boxed{a=10}$