x+6y=21

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Solution for x+6y=21 equation: 


Simplifying
x + 6y = 21

Solving
x + 6y = 21

Solving for variable 'x'.

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

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

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

Simplifying
x = 21 + -6y

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