The answer is x = -1.
First, you use the distributive property and multiply -8 with what's in parentheses on the left side. I'll number the steps below.
1.) -8 times -8x is 64x. Then you take -8 times -6 and get 48.
2.) Now your equation is 64x + 48 = -6x - 22.
3.) Then, you subtract add 6x to the right side, which cancels out the negative, and you add it to the left side getting the equation, 70x + 48 = -22.
4.) Subtract -48 from the left side and add it to the right, getting 70x = -70.
5.) Lastly, you can now divide 70x on the left side, and divide it by 70 on the right and 70 / 70 is equal to 1.
So X = -1.
I hope that was helpful!