Please find attached photograph for your answer. Don't forget to mark me Brainliest if you like my answer.
3(5)+(-2+4(5))
15+(-2+20)
15+(18)
15+18
=33
Explanation:
First, add by 25 both sides of an equation.

Then, simplify by equation and add/subtract by the numbers.

*The answer must be have a negative sign.

Hope this helps!
Thank you!
Have a great day!
1) x=-3. The missing angle is 71 degrees
2) x=45. The missing angles are 90 and 45 degrees.
3) x=40. The missing angles are 40 and 100 degrees