Question

Which is the solution to -3k-2k+12 = 2k-9?​

Answer 1

`answer = 3 \\ solution \\ - 3k - 2k + 12 = 2k - 9 \\ </em></strong><strong><em>or,</em></strong><strong><em> \: - 3k - 2k - 2k = - 12 - 9 \\ </em></strong><strong><em>or,</em></strong><strong><em> \: - 5k - 2k = - 21 \\ </em></strong><strong><em>or,</em></strong><strong><em> \: - 7k = - 21 \\ </em></strong><strong><em>or,</em></strong><strong><em> \: k = ( - 21)/( - 7) \\ k = 3 \\ hope \: it \: helps \\ good \: luck \: on \: your \: assignment`

Answer 2

k =3

Explanation:

-3k-2k+12 = 2k-9

-5k+12 = 2k -9

Add 5k to each side

-5k+5k+12 = 2k+5k-9

12 = 7k-9

Add 9 to each side

12 +9 = 7k-9+9

21 = 7k

Divide each side by 7

21/7 = 7k/7

3 =k