5 + (7-1)2/6

 5 + (7-1)2/6

=5 +6*2/6

=5 + 2

=7//

that is the answer

5 + (7-1)2/6

Using the order of operations......work inside the parentheses, first

5 + (6)*2/6

Next, multiply

5 + 12/6  

Next, divide

5 + 2

And we get.....   7....!!!