2y-21+6y=18+5y

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Solution for 2y-21+6y=18+5y equation:


Simplifying
2y + -21 + 6y = 18 + 5y

Reorder the terms:
-21 + 2y + 6y = 18 + 5y

Combine like terms: 2y + 6y = 8y
-21 + 8y = 18 + 5y

Solving
-21 + 8y = 18 + 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.
-21 + 8y + -5y = 18 + 5y + -5y

Combine like terms: 8y + -5y = 3y
-21 + 3y = 18 + 5y + -5y

Combine like terms: 5y + -5y = 0
-21 + 3y = 18 + 0
-21 + 3y = 18

Add '21' to each side of the equation.
-21 + 21 + 3y = 18 + 21

Combine like terms: -21 + 21 = 0
0 + 3y = 18 + 21
3y = 18 + 21

Combine like terms: 18 + 21 = 39
3y = 39

Divide each side by '3'.
y = 13

Simplifying
y = 13

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