a-2a+3a=12

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Solution for a-2a+3a=12 equation: 


Simplifying
a + -2a + 3a = 12

Combine like terms: a + -2a = -1a
-1a + 3a = 12

Combine like terms: -1a + 3a = 2a
2a = 12

Solving
2a = 12

Solving for variable 'a'.

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

Divide each side by '2'.
a = 6

Simplifying
a = 6

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