219 - 7 ( x + 1 ) = 100
7 ( x + 1 ) = 219 - 100
7 ( x + 1 ) = 119
x + 1 = 119 : 7
x + 1 = 17
x = 16
\(219-7\left(x+1\right)=100\)
\(7\left(x+1\right)=219-100\)
\(7\left(x+1\right)=119\)
\(\left(x+1\right)=119\div7\)
\(\left(x+1\right)=17\)
\(x=17-1\)
\(=>x=16\)
7(x+1)=219-100
7(x+1)=119
x+1=119:7
x+1=17
x=17-6
x=11