exam Maths Puzzle Numerical Ability

Hi I need help with rational equations. The directions say to solve the equation choosing a method.

42. x/9-8/x=1/9

43. (x+42)/x = x

If you can do these and explain them I would very much appreiciate it.

Thank You!

Read Solution (Total 0)

exam Other Question

The weight of 1m^3 of air is approximately 1.3 x 10^3 g. Suppose that the volume of air inside of a building is 3 x 10^6 m^3. How much does the air inside the building weigh?
3x-6y=9 4x-2y=24