Adding mixed numbers

[jholland]

Does anyone know how to multiply two mixed numbers ( a b/c x d e/f ) where all six numbers are relatively prime to each other, or is the best way just to make them improper fractions and then convert the answer back to a mixed number?

[stupidityismygam]

You can still do LIOF.

Suppose you have [unparseable or potentially dangerous latex formula].

Then, multiply the fraction parts together you get [unparseable or potentially dangerous latex formula]. Don't write it down, just remember it.

Next, outside+inside gives you [unparseable or potentially dangerous latex formula]. So now you can write down [unparseable or potentially dangerous latex formula]. Carry the 3.

Multiply the integer parts to get [unparseable or potentially dangerous latex formula] plus the carry gives [unparseable or potentially dangerous latex formula]. Thus, the answer is [unparseable or potentially dangerous latex formula].

In general terms your answer will look like
[unparseable or potentially dangerous latex formula] adjusting the fractional part so that it is less than 1

[88bobcat]