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

Toán Lớp 6: Tìm x nguyên, biết: 9x – 4x = 6^17: 6^15 + 48 :12

Toán Lớp 6: Tìm x nguyên, biết:
9x – 4x = 6^17: 6^15 + 48 :12

Comments ( 2 )

  1. 9x – 4x = 6^{17} : 6^{15} + 48 : 12
    => x. ( 9 – 4 ) = 6^2 + 4
    => 5x = 36 + 4
    => 5x = 40
    => x = 40 : 5
    => x = 8
      $\text{ Vậy x = 8 }$

  2. 9x – 4x = $6^{17}$ : $6^{15}$ + 48 : 12
    5x        = $6^{2}$ + 4
    5x        = 36 + 4
    5x        = 40
      x        = 40 : 5
      x        = 8

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