math
posted by ferrer .
solve rartional expression
[x/5x+10] + [x3/x+2]= [7/5] is the answer 8

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