SOLUTION: A pencil box contains 2 pens cost a, 2 pencils cost b and 1 eraser cost c. The total cost of pencil box is d. Find value of 2a+b
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-> SOLUTION: A pencil box contains 2 pens cost a, 2 pencils cost b and 1 eraser cost c. The total cost of pencil box is d. Find value of 2a+b
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