Question

{58-[20-(3.4-2):5]}:8

Answer 1

{58-[20-(3.4-2):5]}:8
{58-[20-(12-2):5]}:8
{58-[20-10:5]}:8
{58-[20-2]}:8
{58-18}:8
40:8=5

Answer 2

{58-[20-(3.4-2):5]}:8
{58-[20-(10):5]}:8
{58-[20-2]}:8
{58-18}:8
{40}:8

=5