SOLUTION: suppose M is between L and N use segment addition postulate to solve for the variable then find lengths of line LM, line MN,and line LN LM= 7y+9 MN=3y+4 LN= 143

Question 261881: suppose M is between L and N use segment addition postulate to solve for the variable then find lengths of line LM, line MN,and line LN
LM= 7y+9
MN=3y+4
LN= 143
Answer by drk(1908) (Show Source): You can put this solution on YOUR website!
LM + MN = LN by the segment addition postulate
So,

combine like terms to get

subtract 13 to get

divide to get

LM = 100
MN = 43
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