Skip to main content
Ch. R - Algebra Review
Lial - Trigonometry 12th Edition
Lial12th EditionTrigonometryISBN: 9780136552161Not the one you use?Change textbook
Chapter 1, Problem R.2.139

Simplify each expression. See Example 8. 3(k + 2) - 5k + 6 + 3

Verified step by step guidance
1
First, rewrite the expression clearly: \$3(k + 2) - 5k + 6 + 3$.
Apply the distributive property to \$3(k + 2)$, which means multiply 3 by each term inside the parentheses: \(3 \times k + 3 \times 2\).
This gives \$3k + 6\(, so now the expression becomes \)3k + 6 - 5k + 6 + 3$.
Next, combine like terms. Group the terms with \(k\): \$3k - 5k\(, and group the constant terms: \)6 + 6 + 3$.
Simplify each group: \$3k - 5k\( becomes \)(3 - 5)k\(, and \)6 + 6 + 3$ becomes the sum of those constants.

Verified video answer for a similar problem:

This video solution was recommended by our tutors as helpful for the problem above.
Video duration:
2m
Was this helpful?

Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Distributive Property

The distributive property allows you to multiply a single term by each term inside a parenthesis. For example, in 3(k + 2), multiply 3 by k and 3 by 2 separately, resulting in 3k + 6. This step is essential for simplifying expressions with parentheses.
Recommended video:
2:20
Imaginary Roots with the Square Root Property

Combining Like Terms

Combining like terms involves adding or subtracting terms that have the same variable raised to the same power. For instance, terms like 3k and -5k can be combined to simplify the expression. This process reduces the expression to its simplest form.
Recommended video:
3:18
Adding and Subtracting Complex Numbers

Simplification of Constants

Simplification of constants means adding or subtracting the numerical values without variables. In the expression, constants like 6 and 3 can be combined to get 9. This step helps in reducing the expression to a simpler numerical form.
Recommended video:
6:20
Example 6