Toán Lớp 6: 54 : ( x – 7 ) – 5² – 4²
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Toán Lớp 6: 54 : ( x – 7 ) – 5² – 4²
ae giúp tôi với
Comments ( 2 )
$\text{54 : ( x – 7 ) – 5² – 4²}$
$\text{x = 54 : ( x – 7 ) = 9}$
$\text{x = x – 7 = 54 : 9 }$
$\text{x = x – 7 = 6 }$
$\text{⇒ x = 13 }$