-110 = 13 + 3(4h-6)
Applying distributive property:
-110 = 13 + 3*4h - 3*6
-110 = 13 + 12h - 18
-110 = (13-18) + 12h
-110 = -5 + 12h
5 is subtracting on the right, then it will add on the left
-110 + 5 = 12h
-105 = 12h
12 is multiplying on the right, then it will divide on the left
-105/12 = h
-8.75 = h
