Вычислите:в) (3/7+5/14)+1/14е) (1/13+1/4)+12/13

Question

Вычислите:

в) (3/7+5/14)+1/14

е) (1/13+1/4)+12/13

Answer 1

1) 
( 3/7 + 5/14 ) + 1/14 = 6/14 + 5/14 + 1/14 = 12/14 = 6/7 
2) 
( 1/13 + 1/4 ) + 12/13 = 13/13 + 1/4 = 1 + 1/4 = 1 целая 1/4 ( или 1.25 )