Question

91 37/54-47 11/45
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По этапно

Answer 1

$91 frac{37}{54} -47 frac{11}{45} =91 frac{37*15}{54*15} -47 frac{11*18}{45*18} =91 frac{555}{810} -47 frac{198}{810} = \ \ \ =(91-47) frac{555-198}{810}= 44 frac{357}{810} =44 frac{357:3}{810:3} =44 frac{119}{270}$