2y^2-14-7y=y^2-2y

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Solution for 2y^2-14-7y=y^2-2y equation: 


Simplifying
2y2 + -14 + -7y = y2 + -2y

Reorder the terms:
-14 + -7y + 2y2 = y2 + -2y

Reorder the terms:
-14 + -7y + 2y2 = -2y + y2

Solving
-14 + -7y + 2y2 = -2y + y2

Solving for variable 'y'.

Reorder the terms:
-14 + -7y + 2y + 2y2 + -1y2 = -2y + y2 + 2y + -1y2

Combine like terms: -7y + 2y = -5y
-14 + -5y + 2y2 + -1y2 = -2y + y2 + 2y + -1y2

Combine like terms: 2y2 + -1y2 = 1y2
-14 + -5y + 1y2 = -2y + y2 + 2y + -1y2

Reorder the terms:
-14 + -5y + 1y2 = -2y + 2y + y2 + -1y2

Combine like terms: -2y + 2y = 0
-14 + -5y + 1y2 = 0 + y2 + -1y2
-14 + -5y + 1y2 = y2 + -1y2

Combine like terms: y2 + -1y2 = 0
-14 + -5y + 1y2 = 0

Factor a trinomial.
(-2 + -1y)(7 + -1y) = 0


Subproblem 1
Set the factor '(-2 + -1y)' equal to zero and attempt to solve:

Simplifying
-2 + -1y = 0

Solving
-2 + -1y = 0

Move all terms containing y to the left, all other terms to the right.

Add '2' to each side of the equation.
-2 + 2 + -1y = 0 + 2

Combine like terms: -2 + 2 = 0
0 + -1y = 0 + 2
-1y = 0 + 2

Combine like terms: 0 + 2 = 2
-1y = 2

Divide each side by '-1'.
y = -2

Simplifying
y = -2

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 = {-2, 7}

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