a-(-1)=0

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Solution for a-(-1)=0 equation: 


Simplifying
a + -1(-1) = 0

Multiply -1 * -1
a + 1 = 0

Reorder the terms:
1 + a = 0

Solving
1 + a = 0

Solving for variable 'a'.

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

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

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

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

Simplifying
a = -1

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