Question

Explicación clara de esto, muchas gracias.

Answer 1

0.3 Con la rayita encima es 0.333333 = 1/3

2 1/5  = [(2x5) + 1]/5 = 11/5

(1/3) + (11/5) = (1(5) + 11(3))/15 = [5 + 33]/15 = 38/15

Ahora (38/15)(-5/4) = -[(38x5)/(15x4)] = (19)/(3x2) = -19/6