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Exercises Numbers, fractions and percents

Example 3.22 from Prealgebra, 3.2 Add Integers

Add Integers: example 3.22

Evaluate $x + 7 when$

ⓐ $x = −2$
ⓑ $x = −11 .$

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

ⓐ Evaluate $x + 7$ when $x + 5 when$

Simplify.

ⓑ Evaluate $x + 7$ when $x = −11$

Simplify.

Your turn

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

Evaluate each expression for the given values:

$x + 5 when$

ⓐ $x = −3 and$
ⓑ $x = −17$

How did it go?

PreviousAdd Integers: example 3.21 Next Add Integers: example 3.23

From Prealgebra (1st edition) by OpenStax (Rice University), section 3.2, 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.