exam Maths Puzzle Numerical Ability

Please help. How do I do this?
Simplify the complex fraction.
each of these are underlined except for the last one.
w+3
4w
w-3
2w

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exam Other Question

Divide
x^2 – 9x + 20/ 3x – 15 ÷ x^2 – 16/9x + 36

Write the equation of a line with slope -5/6 and y-intercept (0,5)