Original amount = 80 dollars. 20 percent off is 64 dollars. 20 percent off is question mark.
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<em>The result is -13</em>
<h2>Explanation:</h2><h2 />Here we have the following addition problem:
So let's solve this step by step:
Step 1. Perform two plus two.
So:
Step 2. Perform the subtraction.
Since the sign (-) accompanies 17 which is greater than 4, then we perform the subtraction and add the sign (-) to the result. So:
<em>Finally, the result is -13</em>
<h2>Learn more:</h2>Distributive property: brainly.com/question/10794694
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A variable is an English letter we take for unknown values or quantities.We are given expression : .
In the above given expression we have x and y English letters, because we don't know the values of them.
And we have some constant in front of those English letters.
We have in front of xy.
<em>The coefficients are the constant numbers in front of variables.</em>
<h3>Therefore,