Respuesta :
how far away from 0 is -28 ?
-28 + 28 = 0, so you have 28 from p to 0.
now how far away from 0 is 31 ?
31 - 31 = 0, so you have 31 from 0 to q.
add 28 + 31 = 59
pq = 59
how far away from 0 is -28 ?
-28 + 28 = 0, so you have 28 from p to 0.
now how far away from 0 is 31 ?
31 - 31 = 0, so you have 31 from 0 to q.
add 28 + 31 = 59
pq = 59