-10x6x1/2+45

$$\left(-{\mathtt{10}}\right){\mathtt{\,\times\,}}{\mathtt{6}}{\mathtt{\,\times\,}}\left({\frac{{\mathtt{1}}}{{\mathtt{2}}}}\right){\mathtt{\,\small\textbf+\,}}{\mathtt{45}} = {\frac{\left(-{\mathtt{60}}\right)}{{\mathtt{2}}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{45}} = {\mathtt{\,-\,}}{\mathtt{30}}{\mathtt{\,\small\textbf+\,}}{\mathtt{45}} = {\mathtt{45}}{\mathtt{\,-\,}}{\mathtt{30}} = {\mathtt{15}}$$

um -10x6=-60 then -60X1/2=-30 then finish with a plus 45 and you should get

15

hahaha or the top answer!

Without the Order of Operations, it's 15.

With the Order of Operations, it's -1.27659574468.