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

Toán Lớp 7: tính -2/33 + 5/6 + (-31/33) – 1/6

Toán Lớp 7: tính -2/33 + 5/6 + (-31/33) – 1/6

Comments ( 2 )

  1. $\frac{-2}{33}$+$\frac{5}{6}$+$\frac{-31}{33}$-$\frac{1}{6}$
    =$\frac{17}{22}$ +$\frac{-73}{66}$
    = $\frac{-1}{3}$ 

  2. -2/33+5/6+(-31/33)-1/6
    =(-2/33-31/33)+(5/6-1/6)
    =-33/33+2/3
    =-1+2/3=-1/3
     

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

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