(39+1)+36=76
196+207+4+293= (196+4)+(207+293)=200+500=700
316-(198-2)=316-196=120
164-(64+15)= 164-64-15=100-15=85
504-79-21=504-(79+21)=504-100=404
(39+1)+36=76
196+207+4+293= (196+4)+(207+293)=200+500=700
316-(198-2)=316-196=120
164-(64+15)= 164-64-15=100-15=85
504-79-21=504-(79+21)=504-100=404