-(X-1)=12

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Solution for -(X-1)=12 equation: 


Simplifying
-1(X + -1) = 12

Reorder the terms:
-1(-1 + X) = 12
(-1 * -1 + X * -1) = 12
(1 + -1X) = 12

Solving
1 + -1X = 12

Solving for variable 'X'.

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

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

Combine like terms: 1 + -1 = 0
0 + -1X = 12 + -1
-1X = 12 + -1

Combine like terms: 12 + -1 = 11
-1X = 11

Divide each side by '-1'.
X = -11

Simplifying
X = -11

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