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

Toán Lớp 6: (-12):(3/4-5/6)^2 (9/25-2×18):(19/6+0,2) (-6,5)x5,7+5,7x(-3,5) 23`1/4`x7/5-13`1/4`:5/7

Toán Lớp 6: (-12):(3/4-5/6)^2
(9/25-2×18):(19/6+0,2)
(-6,5)x5,7+5,7x(-3,5)
231/4×7/5-131/4:5/7

Comments ( 2 )

  1. Lời giải và giải thích chi tiết:
    (-12) : (3/4 – 5/6)^2
    = (-12) : (-1/12)^2
    = (-12) : 1/144
    = (-12) . 144
    = -1728
    (9/25 – 2 × 18) : (19/6 + 0,2)
    = (9/25 – 36) : (19/6 + 1/5)
    = (-891/25) : (101/30)
    = (-891/25) . 30/101
    = -5346/505
    (6,5) × 5,7 + 5,7 × (-3,5)
    = 5,7 × (6,5 – 3,5)
    = 5,7 × 3
    = 17,1
    23 1/4 × 7/5 – 13 1/4 : 5/7
    = 7/5 × 23 1/4 – 13 1/4 × 7/5
    = 7/5 × (23 1/4 – 13 1/4)
    = 7/5 × 10
    = 14

  2. Giải đáp+Lời giải và giải thích chi tiết:
    +)(-12):(3/4-5/6)^2$\\$=(-12):(-1/12)^2$\\$=(-12):1/144=-1728
    +)(9/25-2xx18):(19/6+0,2)$\\$=(9/25-36):(19/6+1/5)$\\$=(9/25-900/25):(95/30+6/30)$\\$=(-891/25):101/30=-5346/505
    +)(-6,5)xx5,7+5,7xx(-3,5)$\\$=5,7xx(-6,5-3,5)$\\$=5,7xx(-10)=-57
    +)23 1/4xx7/5-13 1/4:5/7$\\$=23 1/4xx7/5-13 1/4xx7/5$\\$=7/5xx(23 1/4-13 1/4)$\\$=7/5xx10$\\$=14

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