Question

Which set notation correctly expresses the solution set to the equation 31−9x=4
?(1 point)
Responses

(3)
left parenthesis 3 right parenthesis

{x=3}
left brace x equals 3 right brace

​ (x=3)
​ left parenthesis x equals 3 right parenthesis

{3}

Answer 1

Solve: 31 − 9x = 4 → −9x = −27 → x = 3.
The solution set in correct set notation is {3}.