3x+9x=6x+42

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Solution for 3x+9x=6x+42 equation:


Simplifying
3x + 9x = 6x + 42

Combine like terms: 3x + 9x = 12x
12x = 6x + 42

Reorder the terms:
12x = 42 + 6x

Solving
12x = 42 + 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.
12x + -6x = 42 + 6x + -6x

Combine like terms: 12x + -6x = 6x
6x = 42 + 6x + -6x

Combine like terms: 6x + -6x = 0
6x = 42 + 0
6x = 42

Divide each side by '6'.
x = 7

Simplifying
x = 7

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