28+x=3x-12

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Solution for 28+x=3x-12 equation:


Simplifying
28 + x = 3x + -12

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

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

Combine like terms: x + -3x = -2x
28 + -2x = -12 + 3x + -3x

Combine like terms: 3x + -3x = 0
28 + -2x = -12 + 0
28 + -2x = -12

Add '-28' to each side of the equation.
28 + -28 + -2x = -12 + -28

Combine like terms: 28 + -28 = 0
0 + -2x = -12 + -28
-2x = -12 + -28

Combine like terms: -12 + -28 = -40
-2x = -40

Divide each side by '-2'.
x = 20

Simplifying
x = 20

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