Trả lời:
2448 : [ 119 - ( x - 6 ) ] = 24
<=> 119 - ( x - 6 ) = 2448 : 24
<=> 119 - ( x - 6 ) = 102
<=> x - 6 = 119 - 102
<=> x - 6 = 17
<=> x = 17 + 6
<=> x = 23
Vậy x = 23
2016 - 10 . ( x + 11 ) = 2^7 : 2^3
<=> 2016 - 10 . ( x + 11 ) = 128 : 8
<=> 2016 - 10 . ( x + 11 ) = 16
<=> 10 . ( x + 11 ) = 2016 - 16
<=> 10 . ( x + 11 ) = 2000
<=> x + 11 = 2000 : 10
<=> x + 11 = 200
<=> x = 200 - 11
<=> x = 189
Vậy x = 189