Answer:
4. -32
5. x= 10
6. x=3
7. x= 1
8. x=2
9. x=-6
Step-by-step explanation:
For every single equation, you equal it to 180, then for the two angles you have, you add them together. Then you subtract whatever the total is for the added angles from 180, Then you divide by the number in front of x on both sides and you get your answer.
9.
125+25+-5x=180
(add like terms)
150+ -5x= 180
(Subtract 150 from both sides.)
-5x = 30
(Divide by -5)
x=-6
