105=3x+12

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Solution for 105=3x+12 equation: 


Simplifying
105 = 3x + 12

Reorder the terms:
105 = 12 + 3x

Solving
105 = 12 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
105 + -3x = 12 + 3x + -3x

Combine like terms: 3x + -3x = 0
105 + -3x = 12 + 0
105 + -3x = 12

Add '-105' to each side of the equation.
105 + -105 + -3x = 12 + -105

Combine like terms: 105 + -105 = 0
0 + -3x = 12 + -105
-3x = 12 + -105

Combine like terms: 12 + -105 = -93
-3x = -93

Divide each side by '-3'.
x = 31

Simplifying
x = 31

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