6y-21=15

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Solution for 6y-21=15 equation: 


Simplifying
6y + -21 = 15

Reorder the terms:
-21 + 6y = 15

Solving
-21 + 6y = 15

Solving for variable 'y'.

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

Add '21' to each side of the equation.
-21 + 21 + 6y = 15 + 21

Combine like terms: -21 + 21 = 0
0 + 6y = 15 + 21
6y = 15 + 21

Combine like terms: 15 + 21 = 36
6y = 36

Divide each side by '6'.
y = 6

Simplifying
y = 6

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