X+2x+(6x-9)=405

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Solution for X+2x+(6x-9)=405 equation:


Simplifying
X + 2x + (6x + -9) = 405

Reorder the terms:
X + 2x + (-9 + 6x) = 405

Remove parenthesis around (-9 + 6x)
X + 2x + -9 + 6x = 405

Reorder the terms:
-9 + X + 2x + 6x = 405

Combine like terms: 2x + 6x = 8x
-9 + X + 8x = 405

Solving
-9 + X + 8x = 405

Solving for variable 'X'.

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

Add '9' to each side of the equation.
-9 + X + 9 + 8x = 405 + 9

Reorder the terms:
-9 + 9 + X + 8x = 405 + 9

Combine like terms: -9 + 9 = 0
0 + X + 8x = 405 + 9
X + 8x = 405 + 9

Combine like terms: 405 + 9 = 414
X + 8x = 414

Add '-8x' to each side of the equation.
X + 8x + -8x = 414 + -8x

Combine like terms: 8x + -8x = 0
X + 0 = 414 + -8x
X = 414 + -8x

Simplifying
X = 414 + -8x

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