points l,m, and n are non collinear with m between land n. lm=2x+8 and mn is one half the length of lm. if ln=42, use the segment subtraction postulate to find the value of x.
Points L, M, and N are collinear with M between L and N. LM = 2x + 8 and MN is one half the length of LM. If LN = 42, write and solve an equation to find x.
