-12-(-40)=x

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Solution for -12-(-40)=x equation:


Simplifying
-12 + -1(-40) = x

Multiply -1 * -40
-12 + 40 = x

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

Solving
28 = x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
28 + -1x = x + -1x

Combine like terms: x + -1x = 0
28 + -1x = 0

Add '-28' to each side of the equation.
28 + -28 + -1x = 0 + -28

Combine like terms: 28 + -28 = 0
0 + -1x = 0 + -28
-1x = 0 + -28

Combine like terms: 0 + -28 = -28
-1x = -28

Divide each side by '-1'.
x = 28

Simplifying
x = 28

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