exam Maths Puzzle Numerical Ability

is (15,-6) is ordered pair or solution?

-3y=x+3
2y=4x-72

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exam Other Question

what I need to siplify is 5x(squared) + 15x over x(cubed) + 27. Geometry. The length of one leg of a right triangle is 3in. more than the other. If the length of the hypotenuse is 15 in., what are the lengths of the two legs?