We want to find x = something, becuase that will tell us what x equals.
Here's how you'd solve this one:
2x/3+x/4=17/12 ---Multiply both sides by 3 to "clear" this divided 3 from the left side
2x+x/4=17/12*3 ---Now we'll do the same thing to the /4. Here I multiplied both sides by 4
2x+x=17/12*3*4 ---Combine the 2x and x to get 3x on the left side
3x=17/12*3*4 ---Now multiply 17 times 3 times 4 and put that over 12.
3x=(17*3*4)/12
3x=(51*4)/12
3x=204/12 ---204 divided by 12 is 17
3x=17 ---Divide both sides by 3 to kind x.
x = 17/3