I need help on adding up fractions that denomonators arent the same HELP

You must make a common denominator.

1. Find the lcm of the denominators
2. Multiply the denominator by the number that makes it the lcm (ex. 2/3 plus 2/4 lcm o 3 and 4 is 12. 3x4= 12. 4x3=12)
3. add them up!