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

Toán Lớp 5: 200 – 18 ÷ (372÷3÷X -1)-28=166

Toán Lớp 5: 200 – 18 ÷ (372÷3÷X -1)-28=166

Comments ( 2 )

  1. Giải đáp + Lời giải và giải thích chi tiết:
     200 – 18 : (372 : 3 : x – 1) – 28 = 166
    200 – 18 : (372 : 3 : x – 1) = 166 + 28
    200 – 18 : (372 : 3 : x – 1) = 194
    18 : (372 : 3 : x – 1) = 200 – 194
    18 : (372 : 3 : x – 1) = 6
    372 : 3 : x – 1 = 18 : 6
    372 : 3 : x – 1 = 3
    124 : x – 1 = 3
    124 : x = 4
    x = 124 : 4
    x = 31

  2. 200 – 18 : (372 : 3 : x – 1) – 28 = 166
    200 – 18 : (372 : 3 : x – 1) = 166 + 28
    200 – 18 : (372 : 3 : x – 1) = 194
    18 : (372 : 3 : x – 1) = 200 – 194
    18 : (124 : x – 1) = 6
    124 : x – 1 = 18 : 6
    124 : x – 1 = 3
    124 : x = 3 + 1
    124 : x = 4
    x = 124 : 4
    x = 31
    Vậy x = 31
     

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