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

Toán Lớp 7: tìm x, biết ($\frac{1}{16}$)$^{x}$ = ($\frac{1}{12}$)$^{12}$

Toán Lớp 7: tìm x, biết
($\frac{1}{16}$)$^{x}$ = ($\frac{1}{12}$)$^{12}$

Comments ( 2 )

  1. (1/16)^x = (1/16)^12
    ⇒ x = 12
    _ Cách làm : x^m = x^n ⇒ m = n 

  2. #laviken#
    Vì 1/16=1/16
    =>(1/16)^12=(1/16)^12
    =>x=12
    Vậy x=12

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