Question

On the last day of her summer tennis camp, Brenna helps her instructor sort through a basket of tennis balls to throw out the old ones. Brenna ends up throwing away 15 of the balls. She returns the remaining 57 balls to the basket. Which equation can you use to find the total number of tennis balls t Brenna checks?

O 15t=57
O t/15 =57
O t+15=57
O t-15=57

Answer 1

The equation t-15=57 can be used to find the total number of tennis balls Brenna checks.

Step-by-step explanation:

To find the total number of tennis balls Brenna checks, we can use the equation t-15=57.

The equation t-15=57 represents that the total number of tennis balls checked, t, minus the number of tennis balls thrown away, 15, is equal to the number of tennis balls returned to the basket, 57.

We can solve the equation by adding 15 to both sides to isolate t, giving us t=72.

t-15=57
t-15+15=57+15
t=72