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