Question

3+ {1/4+[7/4 - (2 - 5/6)}

Answer 1

3+{1/4+[7/4 - (2 - 5/6)}
3+{1/4+[7/4 - (2 -0 )}
3+{1/4+[7/4 - 2}
3+{1/4+[1 - 2}
3+{1/4+1}
3+{0+1}
3+1=4