Answer: 
Step-by-step explanation:
<u>Given equation</u>

<u>Subtract 9 on both sides</u>


<u>Conclusion</u>


Hope this helps!! :)
Please let me know if you have any questions
Answer:
76°
Step-by-step explanation:
by definition, supplementary angles sum up to 180°
hence,
104° + supplementary angle = 180°
supplementary angle = 180° - 104°= 76°
Answer:
cool
Step-by-step explanation:
2v + 7 = 3
- 7 - 7
2v = - 4
v = - 2
3 (x + 7) = 5x - 2
3x + 21 = 5x - 2
3x - 5x = -2 - 21
-2x = -23
x = -23/-2
x = 23/2