Question

17 more than 2 times my number is 21. Mystery number is

Answer 1

Your number is 2.

Explanation:

If we allow n to represent your number, we can find it using the following equation:

(2n + 17 = 21) - 17

(2n = 4) / 2

n = 2

Thus, your number is 2.

Answer 2

Answer: 17 + 2k = 21

Explanation:

In order to find the mystery number, we are going to set up an equation.

Let k be our number.

Then, 2 times k => 2k.

17 more than 2k => 17 + 2k

This equals 21:

17 + 2k = 21

In order to find k, subtract 17 from both sides:

2k = 21 - 17

2k = 4

Next, divide both sides by 2.

k = 2

Therefore, k = 2