Question

Quanto É 3/4-(6/5-2/3×9/8)+1/5?

Answer 1

Ola 

E = 3/4 - (6/5 - 2/3*9/8) + 1/5 

E = 3/4 - (6/5 - 18/24) + 1/5

E = 3/4 - (6/5 - 3/4) + 1/5

E = 3/4 - (24 - 15)/20 + 1/5

E = 3/4 - 9/20 + 1/5 

E = 15/20 - 9/20 + 4/20 

E = 19/20 - 9/20 = 10/20 = 1/2