-y-18=3(y-5)

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Solution for -y-18=3(y-5) equation:


Simplifying
-1y + -18 = 3(y + -5)

Reorder the terms:
-18 + -1y = 3(y + -5)

Reorder the terms:
-18 + -1y = 3(-5 + y)
-18 + -1y = (-5 * 3 + y * 3)
-18 + -1y = (-15 + 3y)

Solving
-18 + -1y = -15 + 3y

Solving for variable 'y'.

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

Add '-3y' to each side of the equation.
-18 + -1y + -3y = -15 + 3y + -3y

Combine like terms: -1y + -3y = -4y
-18 + -4y = -15 + 3y + -3y

Combine like terms: 3y + -3y = 0
-18 + -4y = -15 + 0
-18 + -4y = -15

Add '18' to each side of the equation.
-18 + 18 + -4y = -15 + 18

Combine like terms: -18 + 18 = 0
0 + -4y = -15 + 18
-4y = -15 + 18

Combine like terms: -15 + 18 = 3
-4y = 3

Divide each side by '-4'.
y = -0.75

Simplifying
y = -0.75

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