a-2a=-54

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Solution for a-2a=-54 equation: 



a-2a=-54

We move all terms to the left:

a-2a-(-54)=0

We add all the numbers together, and all the variables

-1a+54=0

We move all terms containing a to the left, all other terms to the right

-a=-54

a=-54/-1

a=+54

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