2a-123=287

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Solution for 2a-123=287 equation: 



2a-123=287

We move all terms to the left:

2a-123-(287)=0

We add all the numbers together, and all the variables

2a-410=0

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

2a=410

a=410/2

a=205

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