(y-7)-(y+7)=4y

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Solution for (y-7)-(y+7)=4y equation:


Simplifying
(y + -7) + -1(y + 7) = 4y

Reorder the terms:
(-7 + y) + -1(y + 7) = 4y

Remove parenthesis around (-7 + y)
-7 + y + -1(y + 7) = 4y

Reorder the terms:
-7 + y + -1(7 + y) = 4y
-7 + y + (7 * -1 + y * -1) = 4y
-7 + y + (-7 + -1y) = 4y

Reorder the terms:
-7 + -7 + y + -1y = 4y

Combine like terms: -7 + -7 = -14
-14 + y + -1y = 4y

Combine like terms: y + -1y = 0
-14 + 0 = 4y
-14 = 4y

Solving
-14 = 4y

Solving for variable 'y'.

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

Add '-4y' to each side of the equation.
-14 + -4y = 4y + -4y

Combine like terms: 4y + -4y = 0
-14 + -4y = 0

Add '14' to each side of the equation.
-14 + 14 + -4y = 0 + 14

Combine like terms: -14 + 14 = 0
0 + -4y = 0 + 14
-4y = 0 + 14

Combine like terms: 0 + 14 = 14
-4y = 14

Divide each side by '-4'.
y = -3.5

Simplifying
y = -3.5

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