Answer:
Dalai have 45 marbles.
Step-by-step explanation:
Consider the provided information.
Dalai bought a few swirl marbles and divided it equally among four of her friends and her brother, Jake. while playing, Jake lost two marbles and has only 7 marbles at present.
Let x is the number of marbles Dalai have.
She divide x number of marbles into 5 equal part (Four of friend and her brother)
That means each of them have [tex]\frac{x}{5}[/tex] marbles.
Jake lost two marbles out of [tex]\frac{x}{5}[/tex] and now he has only 7 marbles,
This can be represented as:
[tex]\frac{x}{5}-2=7[/tex]
Solve the equation for x.
[tex]\frac{x}{5}=7+2[/tex]
[tex]\frac{x}{5}=9[/tex]
[tex]x=45[/tex]
Hence, Dalai have 45 marbles.