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Chapter 1: Problem 86

Write a problem that can be solved by finding the sum of at least three numbers, some positive and some negative. Then explain how to solve the problem.

Short Answer

Expert verified
In the end, you have $8.

Step by step solution

01

Create a Problem Scenario

Let's create a problem: For instance, you have $5 in your pocket. You found $10 on the street and later, you spent $7 on a meal. How much money do you have now?
02

Identify the Numbers

The amount of money you initially have ($5) is positive, the money found ($10) is also positive and the money spent on a meal (-$7) is negative.
03

Add together positive and negative numbers

When you add together positive and negative numbers, the negative number actually subtracts from the total. So it is equivalent to: $5 + $10 - $7.
04

Find the sum

Now, just add and subtract the numbers: $5 + $10 = $15. Then, subtract $7 from $15. That leaves you with $15 - $7 = $8.

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