##x = 20##

##x/5 + x/2 = 14## can be rewritten as a fraction ##1/5x + 1/2x = 14##.

Use common denominator to add fraction ##2/10x + 5/10x = 14## ##7/10x = 14##

Solve for x by multiplying the inverse of ##7/10## ##x = 14*(10/7)## ##x = 20##