13x=21+6x

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Solution for 13x=21+6x equation: 


Simplifying
13x = 21 + 6x

Solving
13x = 21 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
13x + -6x = 21 + 6x + -6x

Combine like terms: 13x + -6x = 7x
7x = 21 + 6x + -6x

Combine like terms: 6x + -6x = 0
7x = 21 + 0
7x = 21

Divide each side by '7'.
x = 3

Simplifying
x = 3

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