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

Toán Lớp 5: 6. Tìm x xxx – xx- x – 25 =4430

Toán Lớp 5: 6. Tìm x
xxx – xx- x – 25 =4430

Comments ( 2 )

  1. Giải đáp+Lời giải và giải thích chi tiết:
    xxxx – xx – x – 25 = 4430
    x( 111 – 11 – 1) =4455
    99x=4455
    x=(4455)/(99)
    x=45
     

  2. $xxx – xx – x – 25 = 4430$
    => x . 111 – x . 11 – x – 25 = 4430
    => x(111 – 11 – 1) = 4430 + 25
    => x . 99 = 4455
    => x = 4455 : 99
    => x = 45
    Vậy x = 45
     

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