## 1 Expert Answer

Peter F. answered • 10/30/20

Enlightened Middle School Math Teacher; 15 Years' Teaching Experience

If this is exercise #12 on your homework, then you are being instructed to solve for the unknown variable in the equation **3n - 10 = 12**

Step 1) To isolate the unknown variable *n, *add 10 to both sides of the equation.

Now you have the equation **3n = 22**

Step 2) To further isolate and subsequently solve for the unknown variable *n, *divide both sides of the equation by 3.

Step 3) Your solution is: **n = 22/3 = 7 1/3 **(the mixed number "seven-and-one-third") * *

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What is your question?10/30/20