Question

Indique o valor da expressão [1÷(1- 1/5)]÷[3÷(1+1/5)]

Answer 1

[1÷(1-1/5)]÷[3÷(1+1/5)]=

[1÷4/5]÷[3÷6/5]=

[1×5/4]÷[3×5/6]=

5/3 ÷ 15/6=

5/3 ×6/15=

30/45=

6/9=

2/3