What fraction of the floats were from either a dance group or a radio station? write in simplest form.

Hello! I believe your answer is 1/2! 
  Here's how I got it : 
                  First I added together the amount of Dance group floats, and the amount of Radio station floats! Which got me :
                              5/18 + 4/18 = 9/18  
        Then after, to simplify it I divided it by the common factor of 9 and 18, which is 9! So : 
                             ( 9/18 ) / 9  = 1/2 

D

1. isolate the variable, in this case, d. subtract 35.5 on both sides of the equation.2. 52 subtracted by 35.5 is 16.53. therefore your answer would be d= 16.5this is the basics of pre algebra, isolating variable through adding, subtracting, multiplying, and dividing, if you have any other questions to ask just comment!