(y-4)-y=4(y-5)

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Solution for (y-4)-y=4(y-5) equation:


Simplifying
(y + -4) + -1y = 4(y + -5)

Reorder the terms:
(-4 + y) + -1y = 4(y + -5)

Remove parenthesis around (-4 + y)
-4 + y + -1y = 4(y + -5)

Combine like terms: y + -1y = 0
-4 + 0 = 4(y + -5)
-4 = 4(y + -5)

Reorder the terms:
-4 = 4(-5 + y)
-4 = (-5 * 4 + y * 4)
-4 = (-20 + 4y)

Solving
-4 = -20 + 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.
-4 + -4y = -20 + 4y + -4y

Combine like terms: 4y + -4y = 0
-4 + -4y = -20 + 0
-4 + -4y = -20

Add '4' to each side of the equation.
-4 + 4 + -4y = -20 + 4

Combine like terms: -4 + 4 = 0
0 + -4y = -20 + 4
-4y = -20 + 4

Combine like terms: -20 + 4 = -16
-4y = -16

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

Simplifying
y = 4

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