To simplify the fraction \( \frac{27}{70} \), we need to find the greatest common divisor (GCD) of the numerator (27) and the denominator (70).
The prime factorization of 27 is \( 3^3 \), and for 70, it is \( 2 \times 5 \times 7 \). Since there are no common factors between 27 and 70, their GCD is 1.
Thus, the fraction \( \frac{27}{70} \) is already in its simplest form.
So, \( \frac{27}{70} \) simplified is \( \frac{27}{70} \).