exam Maths Puzzle Numerical Ability

I am using the Distributive property here, and i have to simplify each expression. This problem has me stumped.

3(e-4f-ef)

Suggestions? Thank you.

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exam Other Question

I am a rectangle. my area is 36 cm2. My lenght is 12 cm. What is my width? Explain how you decide. if the ratio of the angles of the triangle is 1:2:3 then what is the ratio of the the sides of the triangle??