how to get float answer and not a Fraction ?

lets say this is my code ,(simple code ) :

for some reason my answer is fraction and float point anser ,how to fix the format ?

clc;
clear all;
syms R2 
R1=200
eqn=(12*R2)/(R2+R1)==5
sol_R2=simplify(solve(eqn,R2))

Answer 1

[Stephan]

Hi,

symbolic calculatuions are always precise. If you want a float point answer, you have to tell it to matlab:

% one way:
sol__R2_num1 = double(sol_R2)

% The other way:
sol_R2_num2 = simplify(vpasolve(eqn,R2))

Best regards

Stephan