exam Maths Puzzle Numerical Ability

find the LCD of
1 1
------- + ------
1 - x^2 x - 1

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exam Other Question

What ordered pairs is a solution for the equation 3x - 4y = 12?

Thank you very much! 1) Working alone, Coleen can paint a house in 2hr less than James. Working together, they can paint the house in 10hr. How long would it take James to paint the house?