3=231-12x

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Solution for 3=231-12x equation:


Simplifying
3 = 231 + -12x

Solving
3 = 231 + -12x

Solving for variable 'x'.

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

Add '12x' to each side of the equation.
3 + 12x = 231 + -12x + 12x

Combine like terms: -12x + 12x = 0
3 + 12x = 231 + 0
3 + 12x = 231

Add '-3' to each side of the equation.
3 + -3 + 12x = 231 + -3

Combine like terms: 3 + -3 = 0
0 + 12x = 231 + -3
12x = 231 + -3

Combine like terms: 231 + -3 = 228
12x = 228

Divide each side by '12'.
x = 19

Simplifying
x = 19

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