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Exercises Numbers, fractions and percents

Example 3.10 from Prealgebra, 3.1 Introduction to Integers

Introduction to Integers: example 3.10

Simplify: $| 8 + 7 | - | 5 + 6 | .$

Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.

Solution
For each expression, follow the order of operations. Begin inside the absolute value symbols just as with parentheses.

|8+7|−|5+6|

Simplify inside each absolute value sign. |15|−|11|

Subtract. 4

Your turn

The book's Try It right after this example: same idea, new numbers. Only the answer is given.

Simplify: $| 1 + 8 | - | 2 + 5 |$

How did it go?

PreviousIntroduction to Integers: example 3.9 Next Introduction to Integers: example 3.11

From Prealgebra (1st edition) by OpenStax (Rice University), section 3.1, licensed under CC BY 4.0. Original at openstax.org. We split the solution into steps; the words, numbers and figures are the book's. OpenStax doesn't endorse this site.