(x+13y)+8y=0

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Solution for (x+13y)+8y=0 equation: 


Simplifying
(x + 13y) + 8y = 0

Remove parenthesis around (x + 13y)
x + 13y + 8y = 0

Combine like terms: 13y + 8y = 21y
x + 21y = 0

Solving
x + 21y = 0

Solving for variable 'x'.

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

Add '-21y' to each side of the equation.
x + 21y + -21y = 0 + -21y

Combine like terms: 21y + -21y = 0
x + 0 = 0 + -21y
x = 0 + -21y
Remove the zero:
x = -21y

Simplifying
x = -21y

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