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Simplifying (2z + -9)(7 + z) = o Reorder the terms: (-9 + 2z)(7 + z) = o Multiply (-9 + 2z) * (7 + z) (-9(7 + z) + 2z * (7 + z)) = o ((7 * -9 + z * -9) + 2z * (7 + z)) = o ((-63 + -9z) + 2z * (7 + z)) = o (-63 + -9z + (7 * 2z + z * 2z)) = o (-63 + -9z + (14z + 2z2)) = o Combine like terms: -9z + 14z = 5z (-63 + 5z + 2z2) = o Solving -63 + 5z + 2z2 = o Solving for variable 'z'. Reorder the terms: -63 + -1o + 5z + 2z2 = o + -1o Combine like terms: o + -1o = 0 -63 + -1o + 5z + 2z2 = 0 The solution to this equation could not be determined.
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