Answer:
43°
Step-by-step explanation:
∠EFG+∠GFH=∠EFH
- So (3x-20)+(3x+5)=111.
- You don't need the parenthesis, 3x-20+3x+5=111
- Combine like terms, 6x-15=111
- Add 15, 126
- Divide by 6 to isolate the variable, x=21
∠EFG is (3x-20) and we know x is 21. 3(21)-20=63-20=43.
