Question

I never heard of decimals in this type of question before 5=4.5+c

Answer 1

I'm not sure what you're even trying to find since you didn't specify but if you are trying to find the value of 'c' :

0.5 = c

Reason:

5 - 4.5 = 0.5

Answer 2

I'm assuming you're looking for what the value of c is

it's the same with decimals btw

so 5 = 4.5 + c

do 5 - 4.5 = 0.5

so c = 0.5