Make F the subject of 1/f +1/u =1/v

Can someone check my answer? you : )

For what value of x does 4x = (1/8) x + 5?

When the solutions to each of the two equations below are graphed in the xy-coordinate plane, the graphs of the solutions intersect at two places. write the y-cordninates of the points of intersection in the boxes below in order from smallest to largest. y=2x y=x^2-3