Question

Does anyone know this

Answer 1

Explanation:

`\angle{FJG} + \angle{GJH} = \angle{FJH}`

`\Rightarrow (6x - 15) + (x + 8) = 168°`

`\Rightarrow 7x - 7 = 168`

and this gives us

`7x = 175°` or
`x = 25°.`