Question

Ce suma a avut Ion daca dupa ce a cheltuit mai intai 3/5 din suma si apoi 3/10 din aceasi suma avuta la inceput si inca 53 lei iau mai ramas 2 lei?

Answer 1

3x/5+3x/10+53+2=x eliminam mumitorul=> 6x+3x-10x=-550=> x=550 lei

Answer 2

/-------/------/ a
/-------/-------/------/ b

3x/5+3x/10
53+2=x
x=53-2
x=51 (a)=>
6x+3x-10x=-550=>
x=550 (b)