To simplify the expression \( x - \frac{3}{2.2} - 57 \), you need to calculate the value of \(\frac{3}{2.2}\) first.
Calculating \(\frac{3}{2.2}\):
\[ \frac{3}{2.2} = \frac{3 \times 10}{2.2 \times 10} = \frac{30}{22} = \frac{15}{11} \approx 1.3636 \]
Now, substitute this back into the expression:
\[ x - \frac{15}{11} - 57 \]
If you want to combine \(-\frac{15}{11}\) and \(-57\) into a single term, convert \(-57\) into a fraction:
\[ -57 = -\frac{57 \times 11}{11} = -\frac{627}{11} \]
Now, we can combine the two fractions:
\[ -\frac{15}{11} - \frac{627}{11} = -\frac{15 + 627}{11} = -\frac{642}{11} \]
Thus, the expression simplifies to:
\[ x - \frac{642}{11} \]
This is the simplified form of the original expression.