Need math help to list the elements of the given set in roster notation #2

Mathematics
Tutor: None Selected Time limit: 1 Day

Nov 15th, 2015

Thank you for the opportunity to help you with your question!

Think of a roster as this list of names that your PE teacher has.

Here,   the equation 7 - x = 9 is the condition for what belongs in the set. If we solve it, 

7 - x - 7 = 9 - 7

-x = 2

x = -2

The set is  {-2 },  there is only one element in this set.

Please let me know if you need any clarification. I'm always happy to answer your questions.
Nov 15th, 2015

Are you studying on the go? Check out our FREE app and post questions on the fly!
Download on the
App Store
...
Nov 15th, 2015
...
Nov 15th, 2015
Dec 10th, 2016
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer