Question

4 +[5-{2+(5-6 1/2 + 4 1/2)}]​

Answer 1

Step-by-step explanation:

1. 4+[5-{2+(5-61/2+41/2)}]. ◆4+[5-{2+(5-61+41/2)}]. ◆4+[5-{2+(5-102/2)}]. ◆4+[5{2+(5-51)}]. ◆4+[5-{2+(-46)}]. ◆4+[5-{-44}]. ◆4+[5+44] ◆4+49=53