Suppose there is an equation like this (overly simplified example):
eqn1 = ui - ua r1 / (r1 + r2) == 0
How can I get Mathematica to "solve" the equation in terms of:
eqn2 = v == ua / ui
i.e. have Mathematica deliver
v == 1 + r2 / r1 as a result?
Despite googling I cannot find the proper way (tried equation system, Eliminate, LinearSolve, ...). Thanks in advance - Rob