I am testing the casio FX-85WA calculator to solve equations, so I am trying to solve a very simple one: $2x-1=3$. But I am unable to input the equal sign, as it puts the result. I've seen others calculators have the
solve button, but this calculator doesn't have it. So I'm unsure if this calculator can solve equations or not, I checked the manual but doesn't have any examples for equations.
Here is a picture of the calculator: