1. $\left(225-4209520: \frac{1000795+(250+x) \cdot 50}{27}\right)=113$

4209520: $\frac{1000795+(250+x) \cdot 50}{27}=112$

$\frac{1000795+(250+x) \cdot 50}{27}=37585$

$1000795+(250+x) \cdot 50=1014795$

$250+x=280$

$x=30$
Answer: $\boldsymbol{x}=30$.

Criteria. Correct solution - 7 points. $3 a$ for each computational error minus 1 point. Error in the algorithm for solving the equation - 0 points