Question

E = (5! + 6! + 7!)/(5! + 6!)​

Answer 1

E = ( 5! + 6! +7! )/(5! +6!)

E = ( 5! + 6(5)! + 7(6)(5)!)/(5!+6!)

E = 5! [ 1 + 6 + 42) / (5! +6!)

E = 5! [ 49 ] / (5! + 6(5)!)

E = 5! [ 49 ] / 5! [ 1 +6 ]

E = 49 / 7

E = 7

Respuesta : E = 7

:)