Respuesta :

Given 3 ( 3 + 4k ) = 45

So, divide both sides by 3

3 + 4k = 45/3

3 + 4k = 15

subtract 3 from both sides

3 + 4k - 3 = 15 - 3

4k = 12

divide both sides by 4

k = 12/4 = 3

So, the value of k = 3