(5-y)(7-y)=0

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Solution for (5-y)(7-y)=0 equation:


Simplifying
(5 + -1y)(7 + -1y) = 0

Multiply (5 + -1y) * (7 + -1y)
(5(7 + -1y) + -1y * (7 + -1y)) = 0
((7 * 5 + -1y * 5) + -1y * (7 + -1y)) = 0
((35 + -5y) + -1y * (7 + -1y)) = 0
(35 + -5y + (7 * -1y + -1y * -1y)) = 0
(35 + -5y + (-7y + 1y2)) = 0

Combine like terms: -5y + -7y = -12y
(35 + -12y + 1y2) = 0

Solving
35 + -12y + 1y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(5 + -1y)(7 + -1y) = 0

Subproblem 1

Set the factor '(5 + -1y)' equal to zero and attempt to solve: Simplifying 5 + -1y = 0 Solving 5 + -1y = 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 + -1y = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1y = 0 + -5 -1y = 0 + -5 Combine like terms: 0 + -5 = -5 -1y = -5 Divide each side by '-1'. y = 5 Simplifying y = 5

Subproblem 2

Set the factor '(7 + -1y)' equal to zero and attempt to solve: Simplifying 7 + -1y = 0 Solving 7 + -1y = 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 + -1y = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -1y = 0 + -7 -1y = 0 + -7 Combine like terms: 0 + -7 = -7 -1y = -7 Divide each side by '-1'. y = 7 Simplifying y = 7

Solution

y = {5, 7}

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