91260–220хВ=74620,
220хВ=91260–74620,
220хВ=16640,
В=16640:220,
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91260–220хВ=74620,
220хВ=91260–74620,
220хВ=16640,
В=16640:220,
В=757/11220*B=91260-74620
220*B=16640
B=16640^220
B=75 7/11