9y=2y+21

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Solution for 9y=2y+21 equation: 


Simplifying
9y = 2y + 21

Reorder the terms:
9y = 21 + 2y

Solving
9y = 21 + 2y

Solving for variable 'y'.

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

Add '-2y' to each side of the equation.
9y + -2y = 21 + 2y + -2y

Combine like terms: 9y + -2y = 7y
7y = 21 + 2y + -2y

Combine like terms: 2y + -2y = 0
7y = 21 + 0
7y = 21

Divide each side by '7'.
y = 3

Simplifying
y = 3

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