Question

Dintr-un numar n scadem 20. Daca adunam 30 la un sfert din diferenta precedenta, obtinem 50. Afla nr n.

Answer 1

n-20:4+30=50
n-5+30=50
n-5=50-30
n-5=20
n=20+5
n=25

Answer 2

(n-20):4+30=50 n-20=50+30):2 =80:2=40 n-20=40 n=40+20 n=60