Equation:
When adding or subtracting, you have to make sure they have a common denominator
So you have to multiply
by
Since they both have the same denominator, you subtract
One thing to note is when subtracting, you DO NOT subtract the denominator, only the numerators
To reduce to the lowest terms, you need to find a common factor.
5 goes into 10 two times and goes into 15 three times
÷
÷
That leaves it with the fraction
Answer: