Question

How do you solve `19- n = 20`?

Answer 1

`n = -1`

Explanation:

To solve this problem keep the equations balanced and isolate `n` on one side of the equation:

`19 - n - 20 + n = 20 - 20 + n`

`(19 - 20) - (n - n) = (20 - 20) + n`

`-1 - 0 = 0 + n`

`-1 = n`