Respuesta :

joseaaronlara

Answer:

The answer to your question is below

Step-by-step explanation:

Data

AB = 3y - 1

BC = 7y

AC = 29

Prove AB = 8

          AB + BC = AC

       3y - 1 + 7y = 29

     10y -1 = 29

     10y = 29 + 1

     10y = 30

     y = 30/10

     y = 3

AB = 3y - 1

     = 3(3) - 1

     = 9 - 1

     = 8