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Exercises Expressions, exponents and radicals

Example 2.4 from Prealgebra, 2.1 Use the Language of Algebra

Use the Language of Algebra: example 2.4

Determine if each is an expression or an equation:

ⓐ $16 - 6 = 10$
ⓑ $4 \cdot 2 + 1$
ⓒ $x \div 25$
ⓓ $y + 8 = 40$

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.

1

Solution

ⓐ $16 - 6 = 10$	This is an equation—two expressions are connected with an equal sign.
ⓑ $4 \cdot 2 + 1$	This is an expression—no equal sign.
ⓒ $x \div 25$	This is an expression—no equal sign.
ⓓ $y + 8 = 40$	This is an equation—two expressions are connected with an equal sign.

Your turn

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

Determine if each is an expression or an equation:

ⓐ $23 + 6 = 29$
ⓑ $7 \cdot 3 - 7$

How did it go?

PreviousUse the Language of Algebra: example 2.3 Next Use the Language of Algebra: example 2.5

From Prealgebra (1st edition) by OpenStax (Rice University), section 2.1, 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.