2448 : [199 - (x - 6)] = 24
199 - (x -6 ) = 2448 : 24 =102
x - 6 = 199 - 102 = 97
x = 97 + 6
x = 103
\(3^{x+1}=27\)
\(\Rightarrow3^x.3=27\)
\(\Rightarrow3^x=27:3=9=3^2\)
\(\Rightarrow x=2\)
a, 2448 : [199 - (x-6)] = 24
<=>199 - x + 6 = 58752
<=> -x = 58752 -199 - 6 = 58547
<=> x = 58547
b, \(3^{x+1}=27\)
\(\Leftrightarrow3^{x+1}=3^3\)
\(\Leftrightarrow x+1=3\)
\(\Leftrightarrow x=2\)
x=2
x=103
nhé bạn
Chúc bạn học tốt =))