What was Senet (Yes, the Egyptian game) attempting to teach?

At least by the time of the New Kingdom in Egypt (1550–1077 BCE), senet was conceived as a representation of the journey of the ka (the vital spark) to the afterlife.

Explanation:

Senet, means “passing” and had a religious significance – the aim of each player being to move their pieces around the board and avoiding hazards. Good luck was a blessing from the gods and the winner was the first to pass into the afterlife by getting all their pieces off the board.

the perimeter of a triangle is 69 cm. side a is 5 cm shorter than side b. side c is twice as long as side a. find the length of each side. i need to know how to do it in 2 equations.  

equations:

a = b-5

c = 2a

a + b + c = 69

for hobos it was a very hard time most hid on the sides of the railroad tracks causing people to get bulls and get them off sometimes causing in fatal death they couldnt get people to give them money because the   people were also in need of money