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Simplifying 2(10) + -7 = 30 Multiply 2 * 10 20 + -7 = 30 Combine like terms: 20 + -7 = 13 13 = 30 Solving 13 = 30 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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