3-3y=21+6y

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


Simplifying
3 + -3y = 21 + 6y

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

Combine like terms: -3y + -6y = -9y
3 + -9y = 21 + 6y + -6y

Combine like terms: 6y + -6y = 0
3 + -9y = 21 + 0
3 + -9y = 21

Add '-3' to each side of the equation.
3 + -3 + -9y = 21 + -3

Combine like terms: 3 + -3 = 0
0 + -9y = 21 + -3
-9y = 21 + -3

Combine like terms: 21 + -3 = 18
-9y = 18

Divide each side by '-9'.
y = -2

Simplifying
y = -2

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