Respuesta :

Answer:

The answer to your question is RQ = 3

Step-by-step explanation:

Data

SR = x + 7

RQ = x + 4

SQ = 9

Process

1.- Write an equation that helps to solve this problem

        SQ = SR + RQ

- Substitution

        9 = (x + 7) + (x + 4)

- Solve for x

        9 = x + 7 + x + 4

        9 = 2x + 11

        9 - 11 = 2x

             -2 = 2x

              x = 2/-2

              x = -1

2.- Find the length of RQ

      RQ = x + 4

           = -1 + 4

           = 3