let's write it first:
2+\(\frac{3}{4}\)+\(\frac{3}{x}\)=2 \(\frac{5}{8}\)
let's substract 2 from both sides
\(\frac{3}{4}\)+\(\frac{3}{x}\)=\(\frac{5}{8}\)
and let's substract \(\frac{3}{4}\) from both sides too
\(\frac{3}{x}\)=\(\frac{5}{8}\)-\(\frac{3}{4}\)
this is
\(\frac{3}{x}\)=\(\frac{5}{8}\)-\(\frac{6}{8}\)
\(\frac{3}{x}\)=\(\frac{-1}{8}\)
let's multiply by x:
3=\(\frac{-1x}{8}\)
and by8:
24=-x
x=24
that means that the question mark is -24!!!!