exam Maths Puzzle Numerical Ability

How do you subtract this rational expression: 7/x-5 - 2+x/x-5? whats the answer?

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exam Other Question

Gian and Arwin can finish a project in 4 2/3 hours. Gian can do it alone in half as much as time arvin can do the job. how long will it take arwin to do the job alone. Write the equation of the line passing through each of the given points with the indicated slope. Give your results in slope-intercept form, where possible. Points: (0,5), m=-3/5