You can put this solution on YOUR website! Find x :
m/c - 3a + c/x = f
Multiply thru by cx to get:
mx -3acx + c^2 = cfx
Get the x-terms together as follows:
mx-3ax-cfx=c^2
Factor out the "x" to get:
x(m-3a-cf)=c^2
Solve for "x" as follows:
x=c^2/[m-3a-cf)
Cheers,
Stan H.