\(11\left(x-4\right)+19=129\)
\(\Leftrightarrow11\left(x-4\right)=110\)
\(\Leftrightarrow x-4=10\)
\(\Leftrightarrow x=14\)
11( x - 4 ) + 19 = 129
<=> 11( x - 4 ) = 110
<=> x - 4 = 10
<=> x = 14
11 ( x - 4 ) + 19 = 129
11 ( x - 4 ) = 129 - 19
11 ( x - 4 ) = 110
x - 4 = 110 : 11
x - 4 = 10
x = 10 + 4
x = 14