3x=15x-84

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Solution for 3x=15x-84 equation: 


Simplifying
3x = 15x + -84

Reorder the terms:
3x = -84 + 15x

Solving
3x = -84 + 15x

Solving for variable 'x'.

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

Add '-15x' to each side of the equation.
3x + -15x = -84 + 15x + -15x

Combine like terms: 3x + -15x = -12x
-12x = -84 + 15x + -15x

Combine like terms: 15x + -15x = 0
-12x = -84 + 0
-12x = -84

Divide each side by '-12'.
x = 7

Simplifying
x = 7

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