(-7/2)+(-2/3)+(-3/5) 5/8-(-2/5)-3/10 3/4-[(-5/3)-(1/12+2/9)] plssss

2 bình luận về “(-7/2)+(-2/3)+(-3/5) 5/8-(-2/5)-3/10 3/4-[(-5/3)-(1/12+2/9)] plssss”

1. (-7/2) + (-2/3) + (-3/5)

   = (-105/30) -20/30 -18/30

    = {-105 – 20 – 18}/30

   = -143/30

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   5/8 – (-2/5) – 3/10

   = 5/8 + 2/5 – 3/10

   = 25/40 + 16/40 – 12/40

   = 29/40

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   3/4 – [(-5/3) – (1/12 + 2/9)]

   = 3/4 – [(-5/3) – (3/36 + 8/36)]

   = 3/4 – [(-5/3) – 11/36]

   = 3/4 – [(-60/36) – 11/36]

   = 3/4 – (-71/36)

   = 27/36 + 71/36

   = 98/36

   = 49/18

   text{#maingoctranthi}

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2. $Gửie$ 

   

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