Solve the equation S/R + 5 = T/R for R in terms of S and T.
R=
Solve the equation S/R + 5 = T/R for R in terms of S and T.
R=
Original Equation: S/R + 5 = T/R
Currently, R only appears in the denominators of the two fractions. In order to solve for R, you'll need to move R up so it no longer appears as a denominator. To do this multiply both sides of the equation by R.
Mult. both sides by R: R(S/R + 5) = R(T/R)
Distribute the R on the left: R(S/R) + 5R = R(T/R)
Simplify: S + 5R = T
From here, subtract S from both sides and continue solving for R by isolating the R on the left.
Multiply each term by R to clear the R from the denominator, then solve for R.