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

Toán Lớp 7: 1/7×-3/8+1/7×-13 Hộ ngu waaa !giúp vs ạ

Toán Lớp 7: 1/7×-3/8+1/7×-13
Hộ ngu waaa !giúp vs ạ

Comments ( 2 )

  1. 1/7 . -3/8+1/7. 13
    =1/7.(-3/8-13)
    =1/7. -107/8
    =-107/51

  2. Giải đáp:
    $\\$
    1/7 × (-3)/8 + 1/7 × (-13)
    = 1/7 × [(-3)/8 + (-13)]
    = 1/7 × [(-3)/8 + (-104)/8]
    = 1/7 × (-107)/8
    = (-107)/56
     

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

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