como se hace 5+2/3

Primero, cambias 5 en un fraction.

$${\mathtt{5}} = {\frac{{\mathtt{5}}}{{\mathtt{1}}}}$$

Entonces, hace el 1 en  $${\frac{{\mathtt{5}}}{{\mathtt{1}}}}$$  a 3, y el 5 como 15.

$${\frac{{\mathtt{5}}}{{\mathtt{1}}}} = {\frac{{\mathtt{15}}}{{\mathtt{3}}}}$$

A hora, suma.

$${\frac{{\mathtt{15}}}{{\mathtt{3}}}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{2}}}{{\mathtt{3}}}} = {\frac{{\mathtt{17}}}{{\mathtt{3}}}}$$

A hora, pone  $${\frac{{\mathtt{17}}}{{\mathtt{3}}}}$$  en su forma mas simple.

Entoces, tu respuesta es  $${\mathtt{5}}$$ $${\frac{{\mathtt{2}}}{{\mathtt{3}}}}$$ .