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Exercises Expressions, exponents and radicals

Example 2.33 from Prealgebra, 2.3 Solving Equations Using the Subtraction and Addition Properties of Equality

Solving Equations Using the Subtraction and Addition Properties of Equality: example 2.33

Solve: $x - 5 = 8 .$

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
We will use the Addition Property of Equality to isolate the variable.

Add 5 to both sides.

Simplify.

Your turn

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

Solve:

$x - 9 = 13$

How did it go?

PreviousSolving Equations Using the Subtraction and Addition Properties of Equality: example 2.32 Next Solving Equations Using the Subtraction and Addition Properties of Equality: example 2.34

From Prealgebra (1st edition) by OpenStax (Rice University), section 2.3, 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.