exam Maths Puzzle Numerical Ability

solve each of the follwing systems by substitution.
5x-2y=-5
y-5x=3

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exam Other Question

Problem # 18

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Problem x+4)^(3/4) times (x+3)^(-2/3) minus (x+3)^(1/3) times (x+4)^(-1/4) all divided by [(x+4)^(3/4)]^2 how do you simplify this fraction?