here is another one, I am not sure of: these are fractions x/5 - x/3 = 8/15
P paulac New member Joined Jan 28, 2007 Messages 3 Jan 29, 2007 #1 here is another one, I am not sure of: these are fractions x/5 - x/3 = 8/15
A arthur ohlsten Full Member Joined Feb 20, 2005 Messages 852 Jan 29, 2007 #2 x/5-x/3=8/15 find lowest common denominator lcd of 5=5 lcd of 3 = 3 lcd of 15=3,5 ----------------- lcd=3x5=15 multiply both sides of equation by lcd of 15 3x-5x=8 combine likes -2x=8 divide both sides by -2 x=-4 answer check -4/5-[-4/3]=?8/15 [-12+20]/15=?8/15 8/15=?8/15 yes Arthur
x/5-x/3=8/15 find lowest common denominator lcd of 5=5 lcd of 3 = 3 lcd of 15=3,5 ----------------- lcd=3x5=15 multiply both sides of equation by lcd of 15 3x-5x=8 combine likes -2x=8 divide both sides by -2 x=-4 answer check -4/5-[-4/3]=?8/15 [-12+20]/15=?8/15 8/15=?8/15 yes Arthur
