John has 15 more music cds than michael. together they have a total of 55 cds. how many cds does michael have?

So here is how you find the answer of the given problem above.
Given that y = number of CD that Michael has and x is John's.
So x = 15 + y
The total of their CDs is 55.
55 = 15 + y
55 - 15 = y
So y = 30
x = 15 + 30
x = 45
Therefore, John's number of music CDs is 45 and Michael has 30. Hope this answer helps. Thanks for posting your question.

Rounding decimals is very similar to rounding other numbers. if the hundredths and thousandths places of a decimal is forty-nine or less, they are dropped and the tenths place does not change. for example, rounding 0.843 to the nearest tenth would give 0.8. , your welcome !