Respuesta :

KL / JK = 2:7

JL = 162

JK = ?

JL = KL + JK = 162 KL = 2 JK = 7

KL / JK = 2.7

KL = 162 - JK

Substitution

(162 - JK) / JK = 2.7

Solve for JK

162 - JK = 2.7 JK

162 = 2.7 JK + JK

162 = 3.7 JK

JK = 162 / 3.7

JK = 43.8