Question

Qual o resultado (1 + 1/3) x (1 - 1/3) ?
a) -8/9
b) 0
c) 8/9
d) 2

Answer 1

(1+1/3) = 4/3   (1-1/3)=2/3    
4/3 x 2/3 = 8/9 
letra c)   

Answer 2

1 + 1/3 = 4/3

1 - 1/3 = 2/3

4/3  .  2/3  =  8/9