Answer:
You either wrote it down wrong, or there's a graphic to go along with it that you didn't include. There is not enough information to answer this question, sorry.
Divide the first fraction by 2 you get 4/11
divide the second fraction by 2 you get 6/7
The LCM of 24 and 30 is 120.
You can multiply both sides by a number that will get rid of the denominators. For ex. you can multiply the first equation by 12 because 4 and 3 both go into 12 evenly. MAKE SURE YOU MULTIPLY THE OTHER SIDE BY 12 AS WELL! Therefore, 12(x/4) - 12(y/3) = 12(1), or 3x - 4y = 12
