5 + 97 - x + (72 . 45)= 254 + x - 27
5 + 97 - x + 3240= 254 + x - 27
- x -x = - 3240 +254 - 27 - 97 - 5
-2x = -3115
x=1557,5
\(5+97-x+\left(72.45\right)=254+x-27\)
\(5+97-x+3240=254+x-27\)
\(-x-x=254-27-5-97-3240\)
\(-2x=-3115\)
\(x=-3115:-2\)
\(x=\dfrac{3115}{2}=1557,5\)