i need to know what one third times 27 minus 10 plus -15 is
$$\left({\frac{{\mathtt{1}}}{{\mathtt{3}}}}\right){\mathtt{\,\times\,}}{\mathtt{27}}{\mathtt{\,-\,}}{\mathtt{10}}{\mathtt{\,-\,}}\left({\mathtt{15}}\right) = -{\mathtt{16}}$$