Respuesta :
2/5 + 1/6 = 12+5/30 = 17/30
30/30 is the whole book so, 30/30 - 17/30 = 13/30
Sam had to read 13/30 of the book.
30/30 is the whole book so, 30/30 - 17/30 = 13/30
Sam had to read 13/30 of the book.