Question

3x-4 when x = 7 how do I do this equation I’m confused

Answer 1

17.

Explanation:

1. Plug in 7 for x.

2. 3(7)-4

3. 3 times 7 is 21.

4. 21 minus 4 is 17.

5. The Answer is 17.

Answer 2

Plug the 7 in where it says x.
3x-4
3(7)-4
21-4
17