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Simplifying 2(z + 5) + -2z = 7 Reorder the terms: 2(5 + z) + -2z = 7 (5 * 2 + z * 2) + -2z = 7 (10 + 2z) + -2z = 7 Combine like terms: 2z + -2z = 0 10 + 0 = 7 10 = 7 Solving 10 = 7 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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