Question

how old am I if 400 reduced by 2 times my age is 244

Answer 1

x = my age.

$\bf 400-\stackrel{\textit{2 times my age}}{2x}~~\stackrel{is}{=}~~244\implies \stackrel{\textit{subtracting 400 from both sides}}{-2x=-156}\\\\\\x=\cfrac{-156}{-2}\implies x=78$

Answer 2

The answer to your question is 78 years old.