-1-a=-1

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Solution for -1-a=-1 equation: 


Simplifying
-1 + -1a = -1

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

Combine like terms: -1 + 1 = 0
0 + -1a = -1 + 1
-1a = -1 + 1

Combine like terms: -1 + 1 = 0
-1a = 0

Solving
-1a = 0

Solving for variable 'a'.

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

Divide each side by '-1'.
a = 0

Simplifying
a = 0

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