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Simplifying 664.8 = 4(3.14) * 2 Multiply 4 * 3.14 664.8 = 12.56 * 2 Multiply 12.56 * 2 664.8 = 25.12 Solving 664.8 = 25.12 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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