Question

Answer 1

`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`

Vậy `x=16`

Answer 2

a)

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

Answer 3

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

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

\(x + 1 =\) \(\dfrac{119}{7}\)

\(x + 1 = 17\)

\(x = 17 - 1\)

\(x = 16\)

Answer 4

a)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`

Vậy `x=16`