Fractions and Decimals

Discrete Mathematics

Differential Equations

Solved on Nov 07, 2023

Solve the linear equation $21+2f=9f$ for the unknown variable $f$ .

STEP 1

Assumptions1. The given equation is $21+f=9f$ . We are solving for $f$

STEP 2

First, we want to isolate $f$ on one side of the equation. We can do this by subtracting $2f$ from both sides of the equation.
$21+2f-2f =9f-2f$

STEP 3

implify both sides of the equation.
$21 =7f$

STEP 4

Now, we want to isolate $f$ by itself. We can do this by dividing both sides of the equation by7.
$\frac{21}{7} = \frac{7f}{7}$

STEP 5

implify both sides of the equation.
$f =3$ So, the solution to the equation $21+2f=9f$ is $f=3$ .

Was this helpful?

Start learning now

Download Studdy AI Tutor now. Learn with ease and get all help you need to be successful at school.

Contact Influencer program Policy Terms