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Simplifying 28y2 + -1y + -15 = 0 Reorder the terms: -15 + -1y + 28y2 = 0 Solving -15 + -1y + 28y2 = 0 Solving for variable 'y'. Factor a trinomial. (-5 + -7y)(3 + -4y) = 0Subproblem 1
Set the factor '(-5 + -7y)' equal to zero and attempt to solve: Simplifying -5 + -7y = 0 Solving -5 + -7y = 0 Move all terms containing y to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -7y = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -7y = 0 + 5 -7y = 0 + 5 Combine like terms: 0 + 5 = 5 -7y = 5 Divide each side by '-7'. y = -0.7142857143 Simplifying y = -0.7142857143Subproblem 2
Set the factor '(3 + -4y)' equal to zero and attempt to solve: Simplifying 3 + -4y = 0 Solving 3 + -4y = 0 Move all terms containing y to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -4y = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -4y = 0 + -3 -4y = 0 + -3 Combine like terms: 0 + -3 = -3 -4y = -3 Divide each side by '-4'. y = 0.75 Simplifying y = 0.75Solution
y = {-0.7142857143, 0.75}
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