Question

Q.55
Make r the subject of the formula t=r / r-3

Answer 1

`r = (3t)/(t-1)`

Explanation:

`~~~~~~~t= (r)/(r-3)\\\\\implies t(r-3) = r\\\\\implies tr-3t = r\\ \\\implies tr-r = 3t\\\\\implies r(t-1) = 3t\\\\\implies r = (3t)/(t-1)~~~~~~~~~~~~~;t\\eq 1`