Question

Dupa ce s-au parcurs 3/4 dintr-un drum, au mai ramas de parcurs 30 de km . Ce lungime are drumul?

Answer 1

3/4+30=4/4
drumul=30x4=120km

Answer 2

$\frac{3}{4} x=30 \\ 3x=30*4 \\ 3x=120 \\ x=120:3 \\ x=40 km$
$40km+30km=70km$