After a reduction of 2/7 , a TV sold for $625. WHat was its original price? x-.28x=625 .72x=625 divide both sides by .72 x=868.80 where did i go wrong?
Probably the error was in replacing the exact fraction with a decimal approximation. Try using the same steps, but with "2/7" instead of "0.28", and see what you get.