21=-9+6y

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Solution for 21=-9+6y equation:


Simplifying
21 = -9 + 6y

Solving
21 = -9 + 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 + -6y = -9 + 6y + -6y

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

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

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

Combine like terms: -9 + -21 = -30
-6y = -30

Divide each side by '-6'.
y = 5

Simplifying
y = 5

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