6y+9=21

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Solution for 6y+9=21 equation: 


Simplifying
6y + 9 = 21

Reorder the terms:
9 + 6y = 21

Solving
9 + 6y = 21

Solving for variable 'y'.

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

Add '-9' to each side of the equation.
9 + -9 + 6y = 21 + -9

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

Combine like terms: 21 + -9 = 12
6y = 12

Divide each side by '6'.
y = 2

Simplifying
y = 2

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