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Chapter 1: Q9. (page 12)

Find each sum or difference.

-80+102

Short Answer

Expert verified

The sum of numbers is 22.

Step by step solution

01

Step 1. Determine to add or subtract.

Since 鈥� 80 and 102 are of opposite signs. So we will subtract them.

02

Step 2. Determine the sign.

We will subtract the absolute values. Since |102| is greater than |-80|. So the result will be a positive value.

We can write

-80+102=(-80)+102=+(|102|-|-80|)

03

Step 3. Simplify.

We know that the absolute values of the non-zero numbers are always positive.

So,+(|102|-|-80|)=+(102鈥�80)=+22=22

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