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Simplifying (1z + -6)(-7z + -5) = 0 Reorder the terms: (-6 + 1z)(-7z + -5) = 0 Reorder the terms: (-6 + 1z)(-5 + -7z) = 0 Multiply (-6 + 1z) * (-5 + -7z) (-6(-5 + -7z) + 1z * (-5 + -7z)) = 0 ((-5 * -6 + -7z * -6) + 1z * (-5 + -7z)) = 0 ((30 + 42z) + 1z * (-5 + -7z)) = 0 (30 + 42z + (-5 * 1z + -7z * 1z)) = 0 (30 + 42z + (-5z + -7z2)) = 0 Combine like terms: 42z + -5z = 37z (30 + 37z + -7z2) = 0 Solving 30 + 37z + -7z2 = 0 Solving for variable 'z'. Factor a trinomial. (6 + -1z)(5 + 7z) = 0Subproblem 1
Set the factor '(6 + -1z)' equal to zero and attempt to solve: Simplifying 6 + -1z = 0 Solving 6 + -1z = 0 Move all terms containing z to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + -1z = 0 + -6 Combine like terms: 6 + -6 = 0 0 + -1z = 0 + -6 -1z = 0 + -6 Combine like terms: 0 + -6 = -6 -1z = -6 Divide each side by '-1'. z = 6 Simplifying z = 6Subproblem 2
Set the factor '(5 + 7z)' equal to zero and attempt to solve: Simplifying 5 + 7z = 0 Solving 5 + 7z = 0 Move all terms containing z to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + 7z = 0 + -5 Combine like terms: 5 + -5 = 0 0 + 7z = 0 + -5 7z = 0 + -5 Combine like terms: 0 + -5 = -5 7z = -5 Divide each side by '7'. z = -0.7142857143 Simplifying z = -0.7142857143Solution
z = {6, -0.7142857143}
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