6y-21=87

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Solution for 6y-21=87 equation: 


Simplifying
6y + -21 = 87

Reorder the terms:
-21 + 6y = 87

Solving
-21 + 6y = 87

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 = 87 + 21

Combine like terms: -21 + 21 = 0
0 + 6y = 87 + 21
6y = 87 + 21

Combine like terms: 87 + 21 = 108
6y = 108

Divide each side by '6'.
y = 18

Simplifying
y = 18

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