Question 261876
M is between L and N.
LM + MN = LN by segment addition postulate.
So,
{{{3x+8 + 2x-5 = 23}}}
combine like terms to get
{{{5x+3 = 23}}}
subtract 3 to get
 {{{5x = 20}}}
divide by 5 to get
 {{{x = 4}}}
LM = 20
MN = 3