Answer:
28
Step-by-step explanation:due to the lack of information I'm gonna have to include that the total amount of space would be 28
Answer:
1) 
2) 
Step-by-step explanation:
1)

Subtract 15 from both sides

Divide both sides by 2




this shows that 10 is the right answer
2)

Add 3 to both sides

Divide both sides by 7




this shows that 3 is the right answer
Hope this helps
You and your friend made 13 each
The answer to your question is 2.5 hope this helps