Question

Solve the formula for the specified variable A=p+prt solve for r

Answer 1

Answer:

Step-by-step explanation:

The first step is to take p on both sides:

$A - p = p + p*r*t - p$

On the right hand side, cancel p and -p, since $p-p=0$. The equation will be:

$A - p = p*r*t$

Then, divide both sides of the equation by p*t:

$\frac{A-p}{p*t} = \frac{p*r*t}{p*t}$

On the right hand side, p*t can be cancelled:

$\frac{A-p}{p*t} = r$

Answer 2

Answer:

r=A-p     (the line is the bar so this is a-p over pt)

    pt

Step-by-step explanation:

P + Prt = A

     

P r t=A −P            isolate the term which contains  r

   

P rt=A−P

divide pt by each side