Solve this equation -9h-6+12h+40=22
-9h - 6 + 12h + 40 = 223h + 34 = 223h = -12h = -12/3h = -4
\(-9h-6+12h+40=22\\\\(-9h+12h)+(-6+40)=22\\\\3h+34=22\ \ \ |subtract\ 34\ from\ both\ sides\\\\3h=-12\ \ \ \ \ \ |divide\ both\ sides\ by\ 3\\\\\boxed{h=-4}\)