Explain how to subtract 247 from 538

Ineed solving this problem h/8=-25 solve for h idk how to this can someone show me and also give an answer you

Find the coordinates of point x that lies along the directed line segment from y(-8, 8) to t(-15, -13) and partitions the segment in the ratio of 5: 2.

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c