12=3x+12-7x

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Solution for 12=3x+12-7x equation:


Simplifying
12 = 3x + 12 + -7x

Reorder the terms:
12 = 12 + 3x + -7x

Combine like terms: 3x + -7x = -4x
12 = 12 + -4x

Add '-12' to each side of the equation.
12 + -12 = 12 + -12 + -4x

Combine like terms: 12 + -12 = 0
0 = 12 + -12 + -4x

Combine like terms: 12 + -12 = 0
0 = 0 + -4x
0 = -4x

Solving
0 = -4x

Solving for variable 'x'.

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

Add '4x' to each side of the equation.
0 + 4x = -4x + 4x
Remove the zero:
4x = -4x + 4x

Combine like terms: -4x + 4x = 0
4x = 0

Divide each side by '4'.
x = 0

Simplifying
x = 0

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