12y=5y+21

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Solution for 12y=5y+21 equation: 


Simplifying
12y = 5y + 21

Reorder the terms:
12y = 21 + 5y

Solving
12y = 21 + 5y

Solving for variable 'y'.

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

Add '-5y' to each side of the equation.
12y + -5y = 21 + 5y + -5y

Combine like terms: 12y + -5y = 7y
7y = 21 + 5y + -5y

Combine like terms: 5y + -5y = 0
7y = 21 + 0
7y = 21

Divide each side by '7'.
y = 3

Simplifying
y = 3

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