Find the value of X AND RS IF S is between R AND T RS = 5x, ST = 3x, and RT = 48

I'm terrible at math any here is appreciated.

X+ y = 5 ; x - y =3 solve using linear combination

Circle d circumscribes abc and abe. which statements about the triangles are true? statement i: the perpendicular bisectors of abc intersect at the same point as those of abe. statement ii: the distance from c to d is the same as the distance from d to e. statement iii: bisects cde. statement iv: the angle bisectors of abc intersect at the same point as those of abe. a. i only b. i and ii c. ii and iv d. i and iii e. iii and iv