x-9+3x-18=13

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Solution for x-9+3x-18=13 equation:


Simplifying
x + -9 + 3x + -18 = 13

Reorder the terms:
-9 + -18 + x + 3x = 13

Combine like terms: -9 + -18 = -27
-27 + x + 3x = 13

Combine like terms: x + 3x = 4x
-27 + 4x = 13

Solving
-27 + 4x = 13

Solving for variable 'x'.

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

Add '27' to each side of the equation.
-27 + 27 + 4x = 13 + 27

Combine like terms: -27 + 27 = 0
0 + 4x = 13 + 27
4x = 13 + 27

Combine like terms: 13 + 27 = 40
4x = 40

Divide each side by '4'.
x = 10

Simplifying
x = 10

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