\(A=-5,13:\left(5\dfrac{5}{28}-1\dfrac{8}{9}.1,25+1\dfrac{16}{63}\right)\)
\(=-5,13:\left(\dfrac{145}{28}-\dfrac{17}{9}.\dfrac{125}{100}+\dfrac{79}{63}\right)\)
\(=-5,13:\left(\dfrac{145}{28}-\dfrac{17}{9}.\dfrac{5}{4}+\dfrac{79}{63}\right)\)
\(=-5,13:\left(\dfrac{145}{28}-\dfrac{85}{36}+\dfrac{79}{63}\right)\)
\(=-5,13:\dfrac{57}{14}=-5,13:\dfrac{15}{57}\)
\(=\dfrac{-71,82}{57}=1,26\)
Vậy \(A=1,26\)
\(B=\left(3\dfrac{1}{3}.1,9+19,5:4\dfrac{1}{3}\right).\left(\dfrac{62}{75}-\dfrac{4}{25}\right)\)
\(=\left(\dfrac{10}{3}.1,9+19,5:\dfrac{13}{3}\right).\left(\dfrac{62-12}{75}\right)\)
\(=\left(\dfrac{19}{3}+\dfrac{58,5}{13}\right).\dfrac{50}{75}\)
\(=\left(\dfrac{19}{3}+4,5\right).\dfrac{2}{3}\)
\(=\dfrac{32,5}{3}.\dfrac{2}{3}=\dfrac{65}{9}=7\dfrac{2}{9}\)
Vậy \(B=7\dfrac{2}{9}\)
A=−5,13:(5528−189.1,25+11663)=−5,13:(14528−179.125100+7963)=−5,13:(14528−179.54+7963)=−5,13:(14528−8536+7963)=−5,13:5714=−5,13.1457=−71,8257=−1,26A=−5,13:(5528−189.1,25+11663)=−5,13:(14528−179.125100+7963)=−5,13:(14528−179.54+7963)=−5,13:(14528−8536+7963)=−5,13:5714=−5,13.1457=−71,8257=−1,26
B=(313.1,9+19,5:413).(6275−425)=(103.1,9+19,5:133).(62−1275)=(193+58,513).5075=(193+4,5).23=19+13,53.23=32,53.23=659=729
