What is -3 2/7 - -5/7?

Hi my sisters and brothers can tell me the answer because i don’t understand the question

How do you determine whether a relationship represented as as graph is linear or nonlinear

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