John has 15 more music cds than micheal together they have a total of 55 cds

Explanation:

This question's it's about the order of operations. It stands for parenthesis, exponents, multiply, divide, add, and subtract. It can also go left too right. (PEMDAS)

First, do parenthesis.

Then exponents.

Multiply left to right.

Subtract left to right.

It change positive to negative sign.

→

*The answer must have a negative sign.*

Hope this helps!

Thank you!

-Charlie