3x=6x+21

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Solution for 3x=6x+21 equation: 


Simplifying
3x = 6x + 21

Reorder the terms:
3x = 21 + 6x

Solving
3x = 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.
3x + -6x = 21 + 6x + -6x

Combine like terms: 3x + -6x = -3x
-3x = 21 + 6x + -6x

Combine like terms: 6x + -6x = 0
-3x = 21 + 0
-3x = 21

Divide each side by '-3'.
x = -7

Simplifying
x = -7

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