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Exercises Numbers, fractions and percents

Example 4.99 from Prealgebra, 4.7 Solve Equations with Fractions

Solve Equations with Fractions: example 4.99

Solve: $\frac{x}{7} = −9 .$

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

Use the Multiplication Property of Equality to multiply both sides by $7$ . This will isolate the variable.

Multiply.

Simplify.

The equation is true.

Your turn

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

Solve: $\frac{f}{5} = −25 .$

How did it go?

PreviousSolve Equations with Fractions: example 4.98 Next Solve Equations with Fractions: example 4.100

From Prealgebra (1st edition) by OpenStax (Rice University), section 4.7, 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.