exam Maths Puzzle Numerical Ability

Hi! Could someone please help me solve this problem and all exponents should be positive.

(3x4y^3-5y) - (2x+3y^3-5y)

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exam Other Question

Graph each solution: A: |x|>5 B: |x-3|>5 C: |x+3|>5

Please help me solve this...thank you.
3x-3y=3
-2x =0 what is x and y