Tuesday

October 21, 2014

October 21, 2014

Posted by **makhissa** on Tuesday, September 19, 2006 at 5:07pm.

When adding rational numbers we need a common denominator. We have

-7/12 + 5/6

What is the least common multiple of 12 and 6? After you find that make sure both fractions are expressed as a ratio of some number to the lcm, then add the numerators, or in this case subtract one of them from the other.

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