Respuesta :

k/3 + 4 -2k = -9k
First you add 9k to both sides
k/3 + 4 -2k = -9k
            +9k   +9k
k/3 + 4 + 7k = 0

Now subtract 4 from both sides
k/3 + 4 + 7k = 0
        -4           -4
k/3 + 7k = -4

Now multiply 3 by both sides
k/3 + 7k = -4
x3     x3    x3
k +21k = -12

Now add k + 21k
22k = -12

Now divide both sides by 22
22k = -12
-----    -----
 22      22
k = -6/11