Respuesta :

altavistard

Answer:

Step-by-step explanation:

Both terms have the same denominator, 7.  So combining them is relatively easy.  Rewrite 2 4/7 as 18/7 and then subtract 18/7 from 1/7:

1/7 - 18/7 = -17/7

Choose Answer 4:  None of these are correct.