Question

Doua nr au suma 50.Daca le
impartim obtinem catul 4.
Care sunt cele doua nr?

Answer 1

a+b=50
a:b=4
a=4xb
4b+b=50
5b=50
b=50:5
b=10
a=4x10
a=40
V:  40+10=50
     40:10=4

Answer 2

a+b=50
a:b=4
a=4xb
4xb+b=50
5b=50
b=50:5=10
a=4xb=4x10=40
40+10=50(verificare)
40:10=4(verificare)