multiply each term by the least common denominator which is 15 so —> 15 * (2/3x) + 15 * 3 = 15 * (3/5x) + 15 * 4
then you can simplify it to 10x + 45 = 9x + 60 after that you can move all the terms with x to one side and the constant terms to the other —> 10x - 9x = 60 - 45
which then simplifies to 15! so the answer is 15. (x = 15) :D