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

Toán Lớp 7: -5/12 – -1/15 giup tui nhe mn

Toán Lớp 7: -5/12 – -1/15 giup tui nhe mn

Comments ( 2 )

  1. -5/12 – -1/15
    = -5/12 + 1/15
    = -25/60 + 4/60
    = -21/60
    = -7/20
     

  2. -5/12–1/15
    =5(-5/12)-4(-1/15)
    =-25/60-4/60
    =-29/60
     

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

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