Question

(7x-17) find the value of x

Answer 1

The marked angles are consecutive external angles, so they add up to
`180^(\circ)`.

Therefore

`(7x-17)^(\circ)+(7x+1)^(\circ)=180^(\circ)\\(14x)^(\circ)=196^(\circ)\\x^(\circ)=14`

Answer 2

x = 14

Explanation:

7x-17+7x+1 = 180

14x - 16 = 180

14x = 180+16

14x = 196

x= 196 / 14

x = 14.