x+3x+9=27

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Solution for x+3x+9=27 equation: 


Simplifying
x + 3x + 9 = 27

Reorder the terms:
9 + x + 3x = 27

Combine like terms: x + 3x = 4x
9 + 4x = 27

Solving
9 + 4x = 27

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 + -9 + 4x = 27 + -9

Combine like terms: 9 + -9 = 0
0 + 4x = 27 + -9
4x = 27 + -9

Combine like terms: 27 + -9 = 18
4x = 18

Divide each side by '4'.
x = 4.5

Simplifying
x = 4.5

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