How to find a

Find a common denominator and then add and simplify your answer of

3/4 + 5/12

Find the multiples of each denominator

In this case ...

It would be 4, 8, 12

12

See when you come to a common number

(3*3) / (4*3) to get 12 + (5*1) / (12*1) whatever u do to the bottom do to the top

9/12 + 5/12

14/12

7/6

In reality your common denominator should be the Least Common Multiple. The LCM is the product of highest occurring primes of the numbers prime factorizations ...

4=2*2, and 12=2*2*3. So the LCM is 2*2*3=12 Now that you know what the least common multiple is we can say that:

(3/4) (3/3) + 5/12

9/12+5/12

(9+5) / 12

14/12

7/6 which should be converted to a mixed number as this is an improper fraction ...

(6+1) / 6

1+1/6

1 1/6