27-3y=21

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Solution for 27-3y=21 equation: 


Simplifying
27 + -3y = 21

Solving
27 + -3y = 21

Solving for variable 'y'.

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

Add '-27' to each side of the equation.
27 + -27 + -3y = 21 + -27

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

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

Divide each side by '-3'.
y = 2

Simplifying
y = 2

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