Answer:
LN = 15
Explanation:
We know that LM + MN = LN so we will just right the equations that way.
x + 6 + 3x + 5 = 5x + 10 (collect like terms)
4x + 11 = 5x + 10 ( subtract 4x on both sides)
11 = x + 10 ( subtract 10 on both sides)
1 = x
(Plug in)
LM = 1 + 6
MN = 3(1) + 5
LN = 5(1) + 10
1 + 6 + 3(1) + 5 = 5(1) + 10
15 = 15
