2a-1=19-

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Solution for 2a-1=19- equation: 



2a-1=19-

We move all terms to the left:

2a-1-(19-)=0

We add all the numbers together, and all the variables

2a-1-0=0

We add all the numbers together, and all the variables

2a-1=0

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

2a=1

a=1/2

a=1/2

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