219 - 7 . (x + 1) = 100
\(\Rightarrow\) 7 . (x + 1) = 219 - 100
\(\Rightarrow\) 7 . (x + 1) = 119
\(\Rightarrow\) x + 1 = 119 : 7
\(\Rightarrow\) x + 1 = 17 \(\Rightarrow\) x = 17 - 1 \(\Rightarrow\) x = 16 Vậy: x = 16
\(219-7.\left(x+1\right)=100\)
\(7.\left(x+1\right)=219-100\)
\(7.\left(x+1\right)=119\)
\(\left(x+1\right)=119:7\)
\(\left(x+1\right)=17\)
\(x=17-1\)
\(x=16\)
Vậy \(x=16\)
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
