what is 1.5 +/-0.5. is it 2 or 1.75, or 1.25 or 1
1.5 plus or minus -0.5 = 1.5 + (-0.5) = 1 OR 1.5 - (-0.5) = 1.5 + .5 = 2 1 or 2
+36916 
