Can You help me with this problem?

Question

_{The sum of the ages of Berma, her mother Rinna and her father Erwin is 80. Two years from now, Rinna’s age will be 13 less than the sum of Erwin’s age and twice Berma’s age. Three years ago, 15 times Berma’s age was 5 less than the age of Rinna. How old are they now?}

Answer 1

Now:

B + R + E = 80

In two years

(R + 2) = -13 + (E + 2 + 2(B + 2))

Three years ago:

15(B - 3) = -5 + (R - 3)

 

Can you simplify the three and solve?