Question

Solve for k. 20-6+4k=2-2k

Answer 1

1st step
$12 + 6k = 6 \times (k + 2)$
Solve
$6 = 0$
Solve
$k + 2 = 0$
Subtract 2 from both
$k = - 2$

Answer 2

20 - 6 + 4k = 2 - 2k

    14   + 4k = 2 - 2k    added like terms (20 and -6)

           +2k        +2k

     14 + 6k  =  2

    -14           -14

             6k = -12

             $\frac{6k}{6} = \frac{-12}{6}$

               k = -2

Answer: k = -2