-3(y+2)=-6y+21

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Solution for -3(y+2)=-6y+21 equation:


Simplifying
-3(y + 2) = -6y + 21

Reorder the terms:
-3(2 + y) = -6y + 21
(2 * -3 + y * -3) = -6y + 21
(-6 + -3y) = -6y + 21

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

Solving
-6 + -3y = 21 + -6y

Solving for variable 'y'.

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

Add '6y' to each side of the equation.
-6 + -3y + 6y = 21 + -6y + 6y

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

Combine like terms: -6y + 6y = 0
-6 + 3y = 21 + 0
-6 + 3y = 21

Add '6' to each side of the equation.
-6 + 6 + 3y = 21 + 6

Combine like terms: -6 + 6 = 0
0 + 3y = 21 + 6
3y = 21 + 6

Combine like terms: 21 + 6 = 27
3y = 27

Divide each side by '3'.
y = 9

Simplifying
y = 9

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