(x+3x)+(6x-9)=180

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Solution for (x+3x)+(6x-9)=180 equation:


Simplifying
(x + 3x) + (6x + -9) = 180

Combine like terms: x + 3x = 4x
(4x) + (6x + -9) = 180
(4x) + (6x + -9) = 180

Reorder the terms:
(4x) + (-9 + 6x) = 180

Remove parenthesis around (-9 + 6x)
(4x) + -9 + 6x = 180

Reorder the terms:
-9 + (4x) + 6x = 180

Combine like terms: (4x) + 6x = 10x
-9 + 10x = 180

Solving
-9 + 10x = 180

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 + 10x = 180 + 9

Combine like terms: -9 + 9 = 0
0 + 10x = 180 + 9
10x = 180 + 9

Combine like terms: 180 + 9 = 189
10x = 189

Divide each side by '10'.
x = 18.9

Simplifying
x = 18.9

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