Question

Afla necunoscuta:
y+opt supra opt=3

Answer 1

$y+ \frac{8}{8} =3$ (amplificam pe y si pe 3 cu 8 ptr a avea acelasi numitor)
$\frac{8y}{8} + \frac{8}{8} = \frac{24}{8}$
8y+8=24
8y=24-8
8y=16
y=16:8
y=2

Answer 2

$y+ \frac{8}{8}=3 \\ y+1=3 \\ y=3-1 \\ y=2$