14. Triangle DEF and angle measurements are shown. Write and
solve an equation to find the value of h.

Answer:
[tex]\huge\boxed{\sf h = 24}[/tex]
Step-by-step explanation:
So,
2h + 8 + 3h - 3 + 31 + h = 180
Combine like terms
2h + 3h + h + 8 - 3 + 31 = 180
6h + 36 = 180
Subtract 36 to both sides
6h = 180 - 36
6h = 144
Divide 6 to both sides
h = 144/6
[tex]\rule[225]{225}{2}[/tex]