Question

Calcular o valor numérico de 7 + a – b (para a = 2/3 e b = - ½)

A) 15/6
B) 23/3
C) 32/7
D) 49/6

Answer 1

Vamos là.

7 + a - b =

7 + 2/3 + 1/2 =

42/6 + 4/6 + 3/6 = 49/6 (D)