Question 784533
Make x the subject
p= x+3/x 
assume the problem is
p = {{{(x+3)/x}}}; (not x+{{{3/x}}})
multiply both sides by x
px = x + 3
subtract x from both sides
px - x = 3
factor out x
x(p-1) = 3
divide both sides by (p-1)
x = {{{3/(p-1)}}}