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Simplifying 7 * 7 + -7 = 12 Multiply 7 * 7 49 + -7 = 12 Combine like terms: 49 + -7 = 42 42 = 12 Solving 42 = 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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