Answer: Yes
Step-by-step explanation:
Because a=b, we can use the Substitution Property of Equality to substitute a for b. Now our equation looks like this:
a+a=a+a
Using the Reflexive Property, we know that this equation is true. We can use an example by setting a=2. This is what that would look like:
a=2
a=b transitive property
b=2
a+a=a+b substitution property
2+2=2+2
4=4 true
Therefore, yes, it is possible for a+a=a+b when a=b