Funny, even though I did get a 991, when I was in school, we had to figure it out on aper no calculator help back then - even though we were allowed the old TI59 calcs.. we used our grey cells.
Thank you so much...❤❤.. so lately my white version of Casio calculator have be stolen in my school during the recess. So from now on, I'm using this kind of calculator 😅😅... Thanks for teaching mee ❤❤❤❤❤
Thank you soooo muchh I really needed this in order to do this in my calculator which is the same as yours. I thought I needed to buy the latest one but thankfully I can do equations in it now. Thanx again!!