Solve the following expression:
(+8)+(−4.5)= ? (+8)+(-4.5)=\text{ ?} (+8)+(−4.5)= ?
First we need to locate the number 8 on the number line and move 4.5 steps to the left from it:
000888
Remember the rule:
+(−x)=−x +(-x)=-x +(−x)=−x
Now let's rewrite the problem in the appropriate form and solve:
8−4.5=3.5 8-4.5=3.5 8−4.5=3.5
3.5 3.5 3.5