Answer: 15.5
Explanation:
2x/(x+3) + 5/(x-3) = 36/(x^2-9)
First let's multiply the numerator and the denominator of the first term with (x-3) and let's multiply the numerator and the denominator of the second term with (x+3)
2x(x-3)/(x^2-9) + 5(x+3)/(x^2-9) = 36/(x^2-9)
Let's multiply both sides of the equation with (x^2-9)
2X+5=36 substract 5 from both sides
2x = 31 divide both sides by 2
x = 15.5