0.5-2.46-3.54=0.5-(2.46+3.54)=0.5-6=-5.5
=0.5-(2.46+3.54)=0.5-6=-5.5
=0.5-(2.46+3.54)=0.5-6=-5.5
0.5-(2.46+3.54)=-5.5