36=3x+9x

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Solution for 36=3x+9x equation:


Simplifying
36 = 3x + 9x

Combine like terms: 3x + 9x = 12x
36 = 12x

Solving
36 = 12x

Solving for variable 'x'.

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

Add '-12x' to each side of the equation.
36 + -12x = 12x + -12x

Combine like terms: 12x + -12x = 0
36 + -12x = 0

Add '-36' to each side of the equation.
36 + -36 + -12x = 0 + -36

Combine like terms: 36 + -36 = 0
0 + -12x = 0 + -36
-12x = 0 + -36

Combine like terms: 0 + -36 = -36
-12x = -36

Divide each side by '-12'.
x = 3

Simplifying
x = 3

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