Answer:
To solve for <em>n, </em>working backwards can help a lot.
Step-by-step explanation:
The last step we took to result in 40 was to add 12. Therefore, working backward would acquit us to subtract 12.
40 - 12 = 28
After we have done that, we need to observe the first step that we took. This was to double <em>n. </em>Similar, to the last order of operations we took in the previous step, we need to perform the opposite of doubling a number. Because the number is being doubled, it is being multiplied by itself. For example, if we double 4, we would receive 8. Likewise, 4² is 8. So, what is the opposite of multiplication? Well, it's division of course!
28 ÷ 2 is 14.
Therefore, <em>n </em>is 14.
