Question #a0622

1 Answer
Oct 24, 2017

4

Explanation:

First, make them have a common denominator, 10. You do this by multiplying both the denominator and the numerator by either 2 or 5.

18103010(810)

Then subtract 18103010:

18103010=4810

Be careful of the sign here; a minus plus a minus makes a plus. This means that:

4810+810=40104

Answer is 4