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Simplifying (5y + -7)(1 + y) = 0 Reorder the terms: (-7 + 5y)(1 + y) = 0 Multiply (-7 + 5y) * (1 + y) (-7(1 + y) + 5y * (1 + y)) = 0 ((1 * -7 + y * -7) + 5y * (1 + y)) = 0 ((-7 + -7y) + 5y * (1 + y)) = 0 (-7 + -7y + (1 * 5y + y * 5y)) = 0 (-7 + -7y + (5y + 5y2)) = 0 Combine like terms: -7y + 5y = -2y (-7 + -2y + 5y2) = 0 Solving -7 + -2y + 5y2 = 0 Solving for variable 'y'. Factor a trinomial. (-1 + -1y)(7 + -5y) = 0Subproblem 1
Set the factor '(-1 + -1y)' equal to zero and attempt to solve: Simplifying -1 + -1y = 0 Solving -1 + -1y = 0 Move all terms containing y to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + -1y = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -1y = 0 + 1 -1y = 0 + 1 Combine like terms: 0 + 1 = 1 -1y = 1 Divide each side by '-1'. y = -1 Simplifying y = -1Subproblem 2
Set the factor '(7 + -5y)' equal to zero and attempt to solve: Simplifying 7 + -5y = 0 Solving 7 + -5y = 0 Move all terms containing y to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -5y = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -5y = 0 + -7 -5y = 0 + -7 Combine like terms: 0 + -7 = -7 -5y = -7 Divide each side by '-5'. y = 1.4 Simplifying y = 1.4Solution
y = {-1, 1.4}
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