3900+a*200=16900

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Solution for 3900+a*200=16900 equation: 



3900+a*200=16900

We move all terms to the left:

3900+a*200-(16900)=0

We add all the numbers together, and all the variables

a*200-13000=0

Wy multiply elements

200a-13000=0

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

200a=13000

a=13000/200

a=65

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