Since line l is a bisector, both sides of the line are equal.
3x+15 = 8x+25
Now solve for X:
Subtract 15 from each side:
3x = 8x +10
Subtract 8X from each side:
-5X = 10
Divide both sides by -5
X = 10 / -5
X = -2
Now replace X with -2 to solve the equation for JM:
3(-2) +15 =
-6 + 15 = 9
JM = 9
