( 2 7/20 + 5,77) / а = ( 2 35/100 + 5 77/100) / а = 7 112/100 / а = 8,12 /а
при а=14:
8,12 / 14 = 0,58
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( 2 7/20 + 5,77) / а = ( 2 35/100 + 5 77/100) / а = 7 112/100 / а = 8,12 /а
при а=14:
8,12 / 14 = 0,58