-(3-a)=

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Solution for -(3-a)= equation: 


Simplifying
-1(3 + -1a) = 0
(3 * -1 + -1a * -1) = 0
(-3 + 1a) = 0

Solving
-3 + 1a = 0

Solving for variable 'a'.

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

Add '3' to each side of the equation.
-3 + 3 + 1a = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 1a = 0 + 3
1a = 0 + 3

Combine like terms: 0 + 3 = 3
1a = 3

Divide each side by '1'.
a = 3

Simplifying
a = 3

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