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Simplifying 28(28 + 28) = 1680 Combine like terms: 28 + 28 = 56 28(56) = 1680 Multiply 28 * 56 1568 = 1680 Solving 1568 = 1680 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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