Question

1 5
- + -
4 12

Answer 1

Multiply both equations by one so that they have a common denominator. If you multiply by one, it's still the same ration of numerator to denominator. This means that it will be the same fraction for all conventional purposes.

You can find a common denominator by multiplying the two denominators together.

\[4 * 12 = 48\]

So if you do the math, you get...

\[\frac{ 1 }{ 4 }*\frac{ 12 }{ 12 } = \frac{ 12 }{ 48 }\]

and

Now you can just add the two resulting fractions together.

Answer 2

Wheres The Two Fractions

Answer 3

Oh crap. I guess I accidentally replaced it with a space.

The second fraction would be

\[\frac{ 5 }{ 12 }*\frac{ 4 }{ 4 }=\frac{ 20 }{ 48 }\]

Answer 4

But you can get the concept behind it. Any number divided by itself is just one. Since it's equal to one, you can multiply the fraction by it to get the same number. You're just doing a bit of craft maneuvering with numbers to make it easier to do the math. Do you know how to add fractions?

If you have two fractions of a common denominator, you would get something like \[\frac{ a }{ c }+\frac{ b }{ c }=\frac{ a+b }{ c }\]

Answer 5

crafty*

If you're just looking for an answer it's\[\frac{ 20 }{ 48 }+\frac{ 12 }{ 48 }=\frac{ 32 }{ 48 }\]

32 and 48 are both divisible by sixteen, so you can simply the answer to \[\frac{ 2 }{ 3 }\]