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

`@` `\text {Ans}`

`\downarrow`

`219 - 7 \times (x - 1) = 100`

`=> 7 \times (x - 1) = 219 - 100`

`=> 7 \times (x - 1) = 119`

`=> x - 1 = 119 \div 7`

`=> x - 1 = 17`

`=> x = 17 + 1`

`=> x = 18`

Vậy, `x = 18.`

219-7(x+1)=100

212(x+1)=100

x+1=100:212

x+1=2,12

x=2,12-1

x=1,12

219 - 7( x + 1 ) = 100

7 ( x + 1 ) = 219 - 100 = 119

x + 1 = 119 : 7 = 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

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!

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

Tick tớ  nhé bạn ! 

219 - 7 . (x + 1) = 100

\(\Rightarrow\) 7 . (x + 1) = 219 - 100

\(\Rightarrow\) 7 . (x + 1) = 119

\(\Rightarrow\) x + 1 = 119 : 7

\(219-7.\left(x+1\right)=100\)

\(7.\left(x+1\right)=219-100\)

\(7.\left(x+1\right)=119\)

\(\left(x+1\right)=119:7\)

\(\left(x+1\right)=17\)

\(x=17-1\)

\(x=16\)

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

219 - 7 . ( x + 1 ) = 100

7 . ( x+1) = 219 -100=119

x+1=119:7

x+1=17

x=17-1

x=16

219-7.(x+1)=100

=7.(x+1)=119

=(x+1)=119:7

=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 = 16

Chúc mọi người học tốt

219-7(x+1)=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

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

219-7x(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

Đáp án

𝑥=16

7(x+1) = 219-100

7(x+1) = 119

(x+1) = 119:7

(x+1) = 17

x= 17-1

x= 16

vậy x= 16 

:(