exam Maths Puzzle Numerical Ability

simplify

5xy - 3y
---------
9 - 15x

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exam Other Question

Find the roots of the given equation (x^2-4)(x-2)=0
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X= Using a new lawn mower, Abby can mow the lawn in 2 hours. Her sister Carla uses an older mower and takes 3 huors to mow the same lawn. How long will it take them if they work together? Please tell me how you answer it. That would be awesome.