9(y-3)=3y-21

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Solution for 9(y-3)=3y-21 equation: 


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

Reorder the terms:
9(-3 + y) = 3y + -21
(-3 * 9 + y * 9) = 3y + -21
(-27 + 9y) = 3y + -21

Reorder the terms:
-27 + 9y = -21 + 3y

Solving
-27 + 9y = -21 + 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.
-27 + 9y + -3y = -21 + 3y + -3y

Combine like terms: 9y + -3y = 6y
-27 + 6y = -21 + 3y + -3y

Combine like terms: 3y + -3y = 0
-27 + 6y = -21 + 0
-27 + 6y = -21

Add '27' to each side of the equation.
-27 + 27 + 6y = -21 + 27

Combine like terms: -27 + 27 = 0
0 + 6y = -21 + 27
6y = -21 + 27

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

Divide each side by '6'.
y = 1

Simplifying
y = 1

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