Over the last  3   evenings, keisha received a total of  81   phone calls at the call center. the first evening, she received  6   fewer calls than the second evening. the third evening, she received  3   times as many calls as the first evening. how many phone calls did she receive each evening

First: 15

Second: 21

Third: 45

Step-by-step explanation:

In order to create the equation we need to represent the evenings with an alebraic term, in thsi case we are going to represent the second evening with an X

Second evening:x

The first night she got 6 fewer calls than the second: Second-6=x-6

The third night she received 3 times the first: 3(first night)=3(x-6)

The equation is First Night plus second night plus third night equals 81.

So the first evening he received 15 calls, the second he received 21 and the third one he received 45.

is there any photos or whatever?