3a-a=a

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Solution for 3a-a=a equation: 


Simplifying
3a + -1a = a

Combine like terms: 3a + -1a = 2a
2a = a

Solving
2a = a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
2a + -1a = a + -1a

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

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

Divide each side by '1'.
a = 0

Simplifying
a = 0

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