-3y+9=-3(2y+4)

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Solution for -3y+9=-3(2y+4) equation:


Simplifying
-3y + 9 = -3(2y + 4)

Reorder the terms:
9 + -3y = -3(2y + 4)

Reorder the terms:
9 + -3y = -3(4 + 2y)
9 + -3y = (4 * -3 + 2y * -3)
9 + -3y = (-12 + -6y)

Solving
9 + -3y = -12 + -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.
9 + -3y + 6y = -12 + -6y + 6y

Combine like terms: -3y + 6y = 3y
9 + 3y = -12 + -6y + 6y

Combine like terms: -6y + 6y = 0
9 + 3y = -12 + 0
9 + 3y = -12

Add '-9' to each side of the equation.
9 + -9 + 3y = -12 + -9

Combine like terms: 9 + -9 = 0
0 + 3y = -12 + -9
3y = -12 + -9

Combine like terms: -12 + -9 = -21
3y = -21

Divide each side by '3'.
y = -7

Simplifying
y = -7

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