Question

7+[11-{7+5-(3×4+15÷3)}]

Answer 1

23 is your answer mate

Answer 2

7+[11-{7+5-(3×4+5)}]
7+[11-{7+5-(12+5)}]
7+[11-{7+5-17}]
7+[11-{12-17}]
7+[11-{-5}]
7+16
23