Dalia bought a few swirl marbles and divided it equally among four of her friends and her brother, Jake. while playing, jake lost 2 marbles and has only 7 marbles at present. Find how many marbles did Dalia buy in all.

45 marbles : number of marbles that Dalia bought in total

Step-by-step explanation:

Because Dalia's brother has 7 marbles and lost 2, then, he received 9 marbles in total.

Dalia distributed the marbles between four of her friends and her brother, that is, between 5 people.

Dalia gave each one the same amount of marbles as her brother, that is, 9 marbles

x=number of marbles that Dalia gave her brother jake = 7+2 = 9

y = number of people to whom Dalia gave marbles = 4+1=5

z = total number of marbles that Dalia bought = 9*5=45

Total number of marbles that Dalia bought = 45 marbles

Answer: 54

Step-by-step explanation: 7+2=9 9x6=54