Answer:
x=9
Step-by-step explanation:
hello :
use thales- rul :
(3x-20)/56 =9/72
(3x-20)72= 9×56
3x-20 =9×56/72
3x-20 =7
3x=27
x=27/3
x=9
The following answer is 10
I believe the answer is D. Let me know if you need an explanation
Answer:
29 homework problems
Addition Property was used
Step-by-step explanation:
15+5=20+9=29
Addition