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Simplifying (5z + -7)(6 + -1z) = 0 Reorder the terms: (-7 + 5z)(6 + -1z) = 0 Multiply (-7 + 5z) * (6 + -1z) (-7(6 + -1z) + 5z * (6 + -1z)) = 0 ((6 * -7 + -1z * -7) + 5z * (6 + -1z)) = 0 ((-42 + 7z) + 5z * (6 + -1z)) = 0 (-42 + 7z + (6 * 5z + -1z * 5z)) = 0 (-42 + 7z + (30z + -5z2)) = 0 Combine like terms: 7z + 30z = 37z (-42 + 37z + -5z2) = 0 Solving -42 + 37z + -5z2 = 0 Solving for variable 'z'. Factor a trinomial. (-6 + z)(7 + -5z) = 0Subproblem 1
Set the factor '(-6 + z)' equal to zero and attempt to solve: Simplifying -6 + z = 0 Solving -6 + z = 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 + z = 0 + 6 Combine like terms: -6 + 6 = 0 0 + z = 0 + 6 z = 0 + 6 Combine like terms: 0 + 6 = 6 z = 6 Simplifying z = 6Subproblem 2
Set the factor '(7 + -5z)' equal to zero and attempt to solve: Simplifying 7 + -5z = 0 Solving 7 + -5z = 0 Move all terms containing z to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -5z = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -5z = 0 + -7 -5z = 0 + -7 Combine like terms: 0 + -7 = -7 -5z = -7 Divide each side by '-5'. z = 1.4 Simplifying z = 1.4Solution
z = {6, 1.4}
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