exam Maths Puzzle Numerical Ability

Hi, I just asked for some help a little bit ago and I am stuck again. Here is my question... A supplier of electrical equipment offers a 10% discount for a cash purchase or a 5% d

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Cn you please help me solve this system of equations?
3x-y=5
2x-3y=-6 Thank you in advance for your help. It is appreciated. My word problem is: One leg of a right triangle is 4 inches longer than the other leg. If the length of the hypotenuse is 20 inches find the length of each leg.