51=12-x

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Solution for 51=12-x equation:


Simplifying
51 = 12 + -1x

Solving
51 = 12 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
51 + x = 12 + -1x + x

Combine like terms: -1x + x = 0
51 + x = 12 + 0
51 + x = 12

Add '-51' to each side of the equation.
51 + -51 + x = 12 + -51

Combine like terms: 51 + -51 = 0
0 + x = 12 + -51
x = 12 + -51

Combine like terms: 12 + -51 = -39
x = -39

Simplifying
x = -39

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