-21=-6y+3(y-8)

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Solution for -21=-6y+3(y-8) equation:


Simplifying
-21 = -6y + 3(y + -8)

Reorder the terms:
-21 = -6y + 3(-8 + y)
-21 = -6y + (-8 * 3 + y * 3)
-21 = -6y + (-24 + 3y)

Reorder the terms:
-21 = -24 + -6y + 3y

Combine like terms: -6y + 3y = -3y
-21 = -24 + -3y

Solving
-21 = -24 + -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.
-21 + 3y = -24 + -3y + 3y

Combine like terms: -3y + 3y = 0
-21 + 3y = -24 + 0
-21 + 3y = -24

Add '21' to each side of the equation.
-21 + 21 + 3y = -24 + 21

Combine like terms: -21 + 21 = 0
0 + 3y = -24 + 21
3y = -24 + 21

Combine like terms: -24 + 21 = -3
3y = -3

Divide each side by '3'.
y = -1

Simplifying
y = -1

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