21-3y=36+6y

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Solution for 21-3y=36+6y equation:


Simplifying
21 + -3y = 36 + 6y

Solving
21 + -3y = 36 + 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.
21 + -3y + -6y = 36 + 6y + -6y

Combine like terms: -3y + -6y = -9y
21 + -9y = 36 + 6y + -6y

Combine like terms: 6y + -6y = 0
21 + -9y = 36 + 0
21 + -9y = 36

Add '-21' to each side of the equation.
21 + -21 + -9y = 36 + -21

Combine like terms: 21 + -21 = 0
0 + -9y = 36 + -21
-9y = 36 + -21

Combine like terms: 36 + -21 = 15
-9y = 15

Divide each side by '-9'.
y = -1.666666667

Simplifying
y = -1.666666667

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