2020-09-04 05:36:37 -0600 asked a question Finding solution of expression with fractional power I'm trying to solve this equation $3(2.2+(\frac{64}{r})^{(1/3)})= 4(2.2+(\frac{128}{r-1})^{(1/4)})$ using solve function I want to obtain the numerical solution but when i use sol[0].n(30) TypeError: cannot evaluate symbolic expression numerically when i try to find_root(0,1,r) ValueError: negative number to a fractional power not real How to find the solution of this expression ?