3(d + 5) - 7 = 2(d -5). Plz have the work written down. I don't know how to do this. It's hard. Plz help

Sum is 17 and their difference is 3

Typically a point in a three dimensional cartesian coordinate system is represented by which of the following answers in the picture !

Scarlett stopped at a campground along the appalachian trail. the campground had a 12 acre area for tents, divided into 6 equal campsites. scarlett picked one of the sections to pitch her tent. which expression would give you the size of scarlett’s campsite? (more than one answer