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

Toán Lớp 7: $\dfrac{3}{8}$ ` .` $19\dfrac{1}{3}$ `-` $\dfrac{3}{8}$ `.` $33\dfrac{1}{3}$

Toán Lớp 7: $\dfrac{3}{8}$ . $19\dfrac{1}{3}$ – $\dfrac{3}{8}$ . $33\dfrac{1}{3}$

Comments ( 2 )

  1. Giải đáp + Lời giải và giải thích chi tiết:
     3/8 . 19 1/3 – 3/8 . 33 1/3
    = 3/8 . (19 1/3 – 33 1/3)
    = 3/8 . (-14)
    = (3.(-14))/8
    = (-42)/8= (-21)/4

  2. 3/(8).19(1)/(3)-3/(8).33(1)/(3)
    =3/(8).(19(1)/(3)-33(1)/(3))
    =3/(8).((58)/(3)-(100)/(3))
    =3/(8).(-14)
    =-(21)/4
     

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