math
posted by Alicia .
3/x + 5x/12 = 9/4.... i need to solve for x but i don't know what im doing.. can someone help me please

multiply each term by 12x, which will cancel each of the denominators giving you
36 +5x^2 = 27x
5x^2  27x + 36 = 0
(5x12)(x3) = 0
x = 12/5 or x = 3