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>> No.12312399 [View]
File: 6 KB, 665x87, hellb.png [View same] [iqdb] [saucenao] [google]
12312399

AHH I have some uni work due tonight, how do I solve this for B? I dont know what to do with the sigma, can I just cancel them out since its all over the same n and solve it normally? thats what my friend did but something tells me thats not right

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