Respuesta :

KL + LM = KM

2x + 5x = 7
7x = 7
x = 7/7
x = 1

KL = 2x......2(1) = 2
LM = 5x.....5(1) = 5 <====
2x + 5x = 7 

7x = 7 
/7     /7

x = 1 

KL = 2 
LM= 5