a=1-a

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Solution for a=1-a equation: 


Simplifying
a = 1 + -1a

Solving
a = 1 + -1a

Solving for variable 'a'.

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

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

Combine like terms: a + a = 2a
2a = 1 + -1a + a

Combine like terms: -1a + a = 0
2a = 1 + 0
2a = 1

Divide each side by '2'.
a = 0.5

Simplifying
a = 0.5

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