How do i solve for the given replacement set?

7x+28=77 {5, 7, 9}

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

You just substitute the unkown x with the values in the set to determine which is the solution to the problem

starting with 5

7(5) +28 = 77

35+28= 77

63 = 73 (this is not correct)

using 7

7(7) +28 =77

77= 77 this is correct. 7 is therefore the solution to the problem

Thank you so much! It makes so much more sense now. So, to clarify, the answer is 7?

Yes it is.

Am glad to help. Feel free to ank me questions directly via invitation or studypool.com?aid=mickeygabz

But what about 3tsquared-t+1= 11 {0,1,2,3}

Thats a different question. Try and use the same technique or ask me directly via invitation or studypool.com?aid=mickeygabz

Never mind! I got it! Thanks again!

Welcome. Feel free to ask me any other question directly as indicated above

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