\(157-5\left(x+1\right)=57\)
\(5\left(x+1\right)=157-57\)
\(5\left(x+1\right)=100\)
\(x+1=100\div5\)
\(x+1=20\)
\(x=20-1\)
\(x=19\)
157 - 5( x +1 ) = 57
5( x +1 ) = 157 - 57
5( x +1 ) = 100
( x +1 ) = 100 : 5
( x +1 ) = 20
x = 20 - 1
x = 19
157 - 5(x+1)=57
5(x+1)=157-57
5(x+1)=100
x+1=100:5
x+1=20
x=19