Savannah had 400 chocolate chips. she saved x chips for a garnish, and mixed the rest of the chocolate chips evenly into 3 pans of brownies.

The correct equation representing the situation is .

Given, Savannah had 400 chocolate chips and saved chips for garnish and mixed the rest of the chocolate chips evenly into 3 pans of brownies.

Now we can write it in equation form as, the chocolate chips remaining for brownies will be  .

Now Savannah mixes the rest of the chocolates chips evenly into 3 pans of brownies, so it can be written as,

.

Hence the correct equation representing the situation is .

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Step-by-step explanation:

We know she had 400 chocolate chips and she saved x of them. Instantly, we know that "saved" means "subtraction". This is because when you save something, you're not using it immediately. You're putting it to the side. Therefore, the top of the equation would be 400 - x.

Now that we have that information, we can figure out the other part. The problem says that Savannah "mixed the rest of the chocolate chips evenly into 3 pans of brownies." I know that there are 2 key words that stick out to me that tells me what to do next. Those two words are mixed and evenly. When you mix something evenly into a pan in this case, that is a clear sign that we will be using division. In addition, it says that there are 3 pans, so you would divide 400 - x by 3.

Therefore, the answer is .