Z-(-12)=-28

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Solution for Z-(-12)=-28 equation: 


Simplifying
Z + -1(-12) = -28

Multiply -1 * -12
Z + 12 = -28

Reorder the terms:
12 + Z = -28

Solving
12 + Z = -28

Solving for variable 'Z'.

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

Add '-12' to each side of the equation.
12 + -12 + Z = -28 + -12

Combine like terms: 12 + -12 = 0
0 + Z = -28 + -12
Z = -28 + -12

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

Simplifying
Z = -40

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