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

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


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

Reorder the terms:
-6y + 3(-6 + y) = -21
-6y + (-6 * 3 + y * 3) = -21
-6y + (-18 + 3y) = -21

Reorder the terms:
-18 + -6y + 3y = -21

Combine like terms: -6y + 3y = -3y
-18 + -3y = -21

Solving
-18 + -3y = -21

Solving for variable 'y'.

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

Add '18' to each side of the equation.
-18 + 18 + -3y = -21 + 18

Combine like terms: -18 + 18 = 0
0 + -3y = -21 + 18
-3y = -21 + 18

Combine like terms: -21 + 18 = -3
-3y = -3

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

Simplifying
y = 1

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