x*12+28=x*3+217

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Solution for x*12+28=x*3+217 equation:


Simplifying
x * 12 + 28 = x * 3 + 217

Reorder the terms for easier multiplication:
12x + 28 = x * 3 + 217

Reorder the terms:
28 + 12x = x * 3 + 217

Reorder the terms for easier multiplication:
28 + 12x = 3x + 217

Reorder the terms:
28 + 12x = 217 + 3x

Solving
28 + 12x = 217 + 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 + 12x + -3x = 217 + 3x + -3x

Combine like terms: 12x + -3x = 9x
28 + 9x = 217 + 3x + -3x

Combine like terms: 3x + -3x = 0
28 + 9x = 217 + 0
28 + 9x = 217

Add '-28' to each side of the equation.
28 + -28 + 9x = 217 + -28

Combine like terms: 28 + -28 = 0
0 + 9x = 217 + -28
9x = 217 + -28

Combine like terms: 217 + -28 = 189
9x = 189

Divide each side by '9'.
x = 21

Simplifying
x = 21

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