Question

en una recta se toman los puntos consecutivos P, Q y R, PR =20; QR = 4 Hallar PQ

Answer 1

Chico,
Vamos a la recta

                            --------|------------------|---------------------|-----
                                     P                    Q                       R
                                                            |---------------------|
                                                                     4
                                     |----------------------------------------|
                                                   20
En la recta vemos
                PR = PQ + QR
                 20 = PQ + 4
            20 - 4 = PQ
                 16 = PQ
                                           PQ = 16  RESULTADO FINAL

Answer 2

La respuuuuuesta es 16