Question

Use the roster method to write the set of natural numbers x that satisfy x + 7 = 4.Question 41 options:a) { }b) {-2}c) {2}d) None of these

Answer 1

The roster method is defined as a way to show the elements of a set by listing the elements inside of brackets.

To do so, we will first have to solve for x

Given that

`\begin{gathered} x+7=4 \\ \\ adding\text{ -7 to both sides} \\ \\ x+7-7=4-7 \\ \\ x=4-7 \\ \\ x=-3 \\ \end{gathered}`

Therefore, we have

`\lbrace-3\rbrace`

From the options given, we have the answer as None of these