Question

Azorel avea o gramada de oase .Dupa ce a primit inca 6 oase,el a mancat 8 si i-au ramas 13 oase .Cate oase erau la inceput in gramada? Vreau si intrebare

Answer 1

x=gramada de oase
x+6-8=13
x+6=13+8
x+6=21
x=21-6
x=15

Answer 2

a+6-8=13
a+6=13+8
a+6=21
a=21-6
a=15
proba:15+6-8=13