Posted by ferrer on Monday, April 20, 2009 at 11:07pm.
solve rartional expression
[x/5x+10] + [x3/x+2]= [7/5] is the answer 8

math  Reiny, Monday, April 20, 2009 at 11:27pm
no, subbing it in would show you that it does not work.
hint:
x/[5(x+2)] + (x3)/(x+2) = 7/5
isn't the lowest common denominator 5(x+2) ?
multiply each term by that