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

Toán Lớp 6: tính : 15/8 – 15/6 -15/32 + 15/64 / 3- 3/2 – 3/4 + 3/8

Toán Lớp 6: tính : 15/8 – 15/6 -15/32 + 15/64 / 3- 3/2 – 3/4 + 3/8

Comments ( 1 )

  1. Giải đáp+Lời giải và giải thích chi tiết:
     [15/8 – 15/6 -15/32 + 15/64 ]/[3- 3/2 – 3/4 + 3/8]
    =[15/8(15/8:15/8-15/6:15/8-15/32:15/8+15/64:15/8)]/[3(3:3-3/2:3-3/4:3+3/8:3)]
    =[15/8(15/8. 8/15-15/6. 8/15-15/32. 8/15+15/64. 8/15)]/[3(3. 1/3-3/2. 1/3-3/4. 1/3+3/8. 1/3)]
    =[15/8(1-1/2-1/4+1/8)]/[3(1-1/2-1/4+1/8)]
    =[15/8]/[3]
    =15/8:3
    =15/8. 1/3
    =5/5

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

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