Answer:

Option D is the correct option
Explanation:

⇒
{ w ÷ 1 = w , So, I wrote 8 × w }
⇒

Apply cross product property
⇒

Move 15w to left hand side and change it's sign
Similarly, Move 35 to right hand side and change it's sign
⇒

Collect like terms
⇒

Divide both sides of the equation by -7
⇒

Calculate
⇒

Hope I helped!
Best regards!!