12=2x+x+3

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Solution for 12=2x+x+3 equation:


Simplifying
12 = 2x + x + 3

Reorder the terms:
12 = 3 + 2x + x

Combine like terms: 2x + x = 3x
12 = 3 + 3x

Solving
12 = 3 + 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.
12 + -3x = 3 + 3x + -3x

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

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

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

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

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

Simplifying
x = 3

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