Computing for a particular numerical value

Hi,

After using a solve command I can get the result as:

x =

(5941415241525099*R)/2251799813685248000 + 250

Now after second solve command, I can calculate the value of R as:

R =

75800

Now I want to compute x for this particular value of R. (If I am typing just "x" it displays the answer in terms of "R" only).

Any kind of help in this matter will be appreciated.

Thanks!

Answer 1

[Matt Fig]

Use the SUBS command.

syms a x
s = solve(x^3 + a*x + 1)
a = 5;
subs(s)