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219-7x(x-1)=100
⇒ 7x(x-1)=219-100
⇒ 7x(x-1)=119
⇒ x-1=119:7
⇒ x-1=17
⇒ x=17+1
⇒ x=18
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
![](https://rs.olm.vn/images/avt/0.png?1311)
219-7(x+1)=100
212(x+1)=100
x+1=100:212
x+1=2,12
x=2,12-1
x=1,12
Câu hỏi tương tự Đọc thêm219 - 7( x + 1 ) = 100
7 ( x + 1 ) = 219 - 100 = 119
x + 1 = 119 : 7 = 17
x = 17 - 1
x = 16
Vậy x = 16.
![](https://rs.olm.vn/images/avt/0.png?1311)
219-7.(x+1)=100
=> 7.(x+1)=219-100
=> 7.(x+1)=119
=> x+1=17
=> 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
tik mik nha!
![](https://rs.olm.vn/images/avt/0.png?1311)
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 \(x=16\)
![](https://rs.olm.vn/images/avt/0.png?1311)
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
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
![](https://rs.olm.vn/images/avt/0.png?1311)
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
![](https://rs.olm.vn/images/avt/0.png?1311)
219 - 7 . ( x + 1 ) = 100
7 . ( x + 1 ) = 219 - 100
7 . ( x + 1 ) = 119
x + 1 = 119 : 7
x + 1 = 17
Vậy suy ra x = 16 ( mình cũng không biết có đúng không )
219 +7.x+1=100
⇔7x=100-219-1
⇔7x=-120
⇔x=\(\frac{-120}{7}\)
219 +7 . x + 1 = 100
(219 + 1) + 7. x = 100
220 + 7. x = 100
7 . x = 100 - 220
7 . x = -120
x = (-120) : 7
x = \(\frac{-120}{7}\)