Hi there!
To find this, do these steps.
1: Multiply both sides by x - 10. (396/x-10 cancels out to 396.)
396 = -22(x-10)
2: Divide both sides by -22. (-22 itself cancels out)
-396/22=x-10
3: Do -396/22. (-18)
-18 = x - 10
4: Add 10 to both sides..
-18 + 10 = x
5: Do the addition. (-8)
-8 = x.
6: Flip, if necessary.
x = -8.
Hope this helps!! ♥♥