6y=21+3y

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Solution for 6y=21+3y equation: 


Simplifying
6y = 21 + 3y

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

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

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

Divide each side by '3'.
y = 7

Simplifying
y = 7

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