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

Toán Lớp 6: (-15)+14+(-85)+86 Trình bày ra

Toán Lớp 6: (-15)+14+(-85)+86
Trình bày ra

Comments ( 2 )

  1. (-15) + 14 + (-85) + 86
    = (-15 + 14) + (-85 + 86)
    = -1 + 1
    = 0
     

  2.     ( -15 ) + 14 + ( -85 ) + 86
    = -15 + 14 – 85 + 86
    = -15 – 85 + 14 + 86
    = – ( 15 + 85 ) + ( 14 + 86 )
    = – 100 + 100
    = 100 – 100
    = 0

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