15/8 – 4/9 x 6/8 + 1/6 7/15 + (5/6 – 1/3)

2 bình luận về “15/8 – 4/9 x 6/8 + 1/6 7/15 + (5/6 – 1/3)”

1. Giải đáp:

    

   Lời giải và giải thích chi tiết:

   15/8 – 4/9 xx 6/8 + 1/6

   = 15/8 – 1/3 + 1/6

   = 37/24 + 1/6

   = 41/24

   7/15 + (5/6 – 1/3)

   = 7/15 + 1/2

   = 29/30

   Trả lời
2. 15/8-4/9xx6/8+1/6

   =15/8+1/6-(4xx6)/(9xx8)

   =(15xx3)/(8xx3)+(1xx4)/(6xx4)-24/72

   =45/24+4/24-24/72

   =(45+4)/24-(24:24)/(72:24)

   =49/24-1/3

   =49/24-(1xx8)/(3xx8)

   =49/24-8/24

   =(49-8)/24

   =41/24

   ———————————-

   7/15+(5/6-1/3)

   =7/15+(5/6-(1xx2)/(3xx2))

   =7/15+(5/6-2/6)

   =7/15+(5-2)/6

   =7/15+3/6

   =(7xx2)/(15xx2)+(3xx5)/(6xx5)

   =14/30+15/30

   =(14+15)/30

   =29/30

   Trả lời