5p-9=2p+12
5p-2p=12+9
3p=21
p=21/3
p=7
Answer:
Please refrain from using Spanish in a English brainliest site.
Step-by-step explanation:
Answer:
(1,-2) edge2020
Step-by-step explanation:
Answer:
The unknown angle is 80
Step-by-step explanation:
The sum of the angles of a triangle add to 180 degrees
Let the unknown angle be x
20+80+x = 180
Add like terms
100+x = 180
Subtract 100 from each side
100-100+x=180-100
x = 80
