Check for missing argument or incorrect argument data type in call to function 'solve'. error

I am trying to solve for a variable using the solve command. I know I can do so symbollically, but I want to first intiailize the variable and then solve for it since I am using an iterative approach to solve a problem and the variable's value is updated at the end of each iteration. When I execute the code below I get an error message. Can someone explain how this can be done?

a = 0;
a = solve(a+2==5)

Answer 1

[Deepak Meena]

Hi Aleem,

Refer to this solve documentation. Here as you can need to define a as the symbolic variable fThis

Here is an example

>> syms a
a = solve(a+2==5)
 
a =
 
3
 
>>