Question

Calcule MENTALMENTE o valor de cada uma das expressões :A ) 3/4 +1/4B ) 1 - 1/6C ) 3/7 + 2/5 + 4/7 + 3/5 Obs : QUERO EXPLICADO !

Answer 1

A ) 3/4 +1/4 = 4/4 = 1
B ) 1 - 1/6 = 6/6 - 1/6 = 5/6
C ) 3/7 + 2/5 + 4/7 + 3/5 = 3/7 + 4/7 + 2/5 + 3/5 = 7/7 + 5/5 = 1+1 = 2