13 + 2.x = 29
2 . x = 29 - 13
2 . x = 16
x = 16 : 2
x = 8
13 + 2 . x = 29
2x = 29 - 13
2x = 16
x = 16 : 2
x = 8
Vậy x = 8
\(13+2x=29\)
\(\Leftrightarrow2x=16\Leftrightarrow x=8\)
2*x là \(2^x\) hay \(2\times x\) hả bn?
\(13+2x=29\)
\(\Rightarrow2x=16\)
\(\Rightarrow x=8\)
Vậy \(x=8\)