Solve each of the following problems by setting up and solving a system of three linear equations in three variables. Five pounds of potatoes, 1 pound of onions, and 2 pounds of apples cost $5.12. Two pounds of potatoes, 3 pounds of onions, and 4 pounds of apples cost $7.14. Three pounds of potatoes, 4 pounds of onions, and 1 pound of apples cost $5.96. Find the price per pound for each item.

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A: Topic = Linear equation

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