400-2a=245

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Solution for 400-2a=245 equation: 



400-2a=245

We move all terms to the left:

400-2a-(245)=0

We add all the numbers together, and all the variables

-2a+155=0

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

-2a=-155

a=-155/-2

a=77+1/2

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