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

Toán Lớp 5: 45 x 16 – 27 / 45 x 15 + 28 giúp mk nhé

Toán Lớp 5: 45 x 16 – 27 / 45 x 15 + 28
giúp mk nhé

Comments ( 2 )

  1. (45 × 16 – 27 )/( 45 × 15 + 28)
    = (720 – 27 )/(675 + 28)
    = 693/703
    (Chúc bạn học tốt)
     

  2. {45 × 16 – 27}/{45 × 15 + 28}
    = {45 × ( 15 + 1 ) – 27}/{45 × 15 + 28}
    = {45 × 15 + 45 – 27}/{45 × 15 + 28}
    = {45 × 15 + 18}/{45 × 15 + 28}
    = {675 + 18}/{675 + 28}
    = 693/703
    #dtkc
     

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