solve in terms of r:s=a/1-r
To solve the equation in terms of r, we'll need to isolate r on one side of the equation.
s = a/(1 - r)
To get rid of the fraction, we can multiply both sides of the equation by (1 - r):
s * (1 - r) = a
Next, distribute s to both terms in the parentheses:
s - s * r = a
Rearranging the equation by bringing -s * r to the left side:
-s * r = a - s
Now, we can isolate r by dividing through by -s:
r = (a - s) / -s
However, we can simplify this equation by dividing both numerator and denominator by -1:
r = (s - a) / s
So, the equation in terms of r is r = (s - a) / s.