3x+12=4(x+3)-x

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Solution for 3x+12=4(x+3)-x equation: 


Simplifying
3x + 12 = 4(x + 3) + -1x

Reorder the terms:
12 + 3x = 4(x + 3) + -1x

Reorder the terms:
12 + 3x = 4(3 + x) + -1x
12 + 3x = (3 * 4 + x * 4) + -1x
12 + 3x = (12 + 4x) + -1x

Combine like terms: 4x + -1x = 3x
12 + 3x = 12 + 3x

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

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

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

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

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

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

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

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