how do i do this equation on the calculator? (3/4-2/3)+(1/2+1/3)=

exactly the same as you wrote it here. :/

(3/4-2/3)+(1/2+1/3)=

 

$$\left({\frac{{\mathtt{3}}}{{\mathtt{4}}}}{\mathtt{\,-\,}}{\frac{{\mathtt{2}}}{{\mathtt{3}}}}\right){\mathtt{\,\small\textbf+\,}}\left({\frac{{\mathtt{1}}}{{\mathtt{2}}}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{3}}}}\right) = {\frac{{\mathtt{11}}}{{\mathtt{12}}}} = {\mathtt{0.916\: \!666\: \!666\: \!666\: \!666\: \!7}}$$