Geometry problems

[Troop186man]

Hi, I was doing my math work in class but could not figure out how to find x in the one harder question, please help me , this really has me stumped

-5(1-5x)+5(-8x-2)=-4x-8x

 

[tkhunny]

Please demonstrate your efforts. It appears to me that the Distributive Property of Multiplication over Addition might be of some benefit.