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Simplifying 2z + -7 = 2z + -2 Reorder the terms: -7 + 2z = 2z + -2 Reorder the terms: -7 + 2z = -2 + 2z Add '-2z' to each side of the equation. -7 + 2z + -2z = -2 + 2z + -2z Combine like terms: 2z + -2z = 0 -7 + 0 = -2 + 2z + -2z -7 = -2 + 2z + -2z Combine like terms: 2z + -2z = 0 -7 = -2 + 0 -7 = -2 Solving -7 = -2 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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