exam Maths Puzzle Numerical Ability

Hi,
I have been asking the question wrong, because I was reading it incorrectly.

My study exam reads: Solve the following systems of equation by any method.

a) 3x-2y=12

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exam Other Question

69.72=68.9257x + 70.9249(1-x) The area of a right triangle is 120 sq. in. The longer leg is 4 more than twice the shorter leg. Find the length of each leg. Show all work to receive credit.