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Simplifying 0.5(4z + -9) = 13 + 2z Reorder the terms: 0.5(-9 + 4z) = 13 + 2z (-9 * 0.5 + 4z * 0.5) = 13 + 2z (-4.5 + 2z) = 13 + 2z Add '-2z' to each side of the equation. -4.5 + 2z + -2z = 13 + 2z + -2z Combine like terms: 2z + -2z = 0 -4.5 + 0 = 13 + 2z + -2z -4.5 = 13 + 2z + -2z Combine like terms: 2z + -2z = 0 -4.5 = 13 + 0 -4.5 = 13 Solving -4.5 = 13 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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