What do you think happens to the reservation land left over
once the allotments are given
out?

The remaining tribal land would be sold to non-Indian farmers and ranchers.

Explanation:

Each tribal member was appointed a portion and, after a “trust” period (which last for 25 years) would be assigned a document to it, enabling the owner to sell it. Tribal lands not allotted to Native Americans on the reservation were to be sold to the United States and the land would be opened for homesteading. Once the allotments were issued, the remaining tribal land would be sold to non-Indian farmers and ranchers.  

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