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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 7: 4/(9 ) ∶(-1/7)+ 6 và5/9 .( 2/3)

Toán Lớp 7: 4/(9 ) ∶(-1/7)+ 6 và5/9 .( 2/3)

Comments ( 1 )

  1. \frac{4}{9} : (-\frac{1}{7}) + 6
    = \frac{4}{9} . (-\frac{7}{1}) + 6 
    = -\frac{28}{9} + 54/9
    = 26/9
    \frac{5}{9} . \frac{2}{3}
    = \frac{5 . 2}{9 . 3}
    = \frac{10}{27}

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222-9+11+12:2*14+14 = ? ( )

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