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Exercises Numbers, fractions and percents

Example 3.24 from Prealgebra, 3.2 Add Integers

Add Integers: example 3.24

Evaluate $3 a + b$ when $a = 12$ and $b = −30 .$

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

Multiply.

Add.

Your turn

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

Evaluate the expression:

$a + 2 b when a = −19 and b = 14 .$

How did it go?

PreviousAdd Integers: example 3.23 Next Add Integers: example 3.25

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.