a+2a=20

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Solution for a+2a=20 equation: 


Simplifying
a + 2a = 20

Combine like terms: a + 2a = 3a
3a = 20

Solving
3a = 20

Solving for variable 'a'.

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

Divide each side by '3'.
a = 6.666666667

Simplifying
a = 6.666666667

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