exam Maths Puzzle Numerical Ability

Please help. -5(1-5x)+5(-8x-2)=-4x-8x Thank you.

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exam Other Question

The question is; What is the measure of an angle whose supplement is equal to twice its complement?
With this problem I honestly don't know where to begin. I keep wanting to say 1. Janifryda is playing with a frisbee whose diameter is 12 inchers. If she tosses it onto a coordinate plane, and its center falls on thepoint (-2,1), whatis the equation of the frisbee?

thank you!