Question

Question #49a45

Answer 1

See the entire solution process below:

Explanation:

First, let's call "a number": `n`.

Then "three times a number" can be written as:

`(3 xx n)` or `(3 * n)` or `3n` - we will use `3n`

One more than this can be written as:

`3n + 1`

This sum "is seven" so we can write:

`3n + 1 = 7`