Final answer:
The ratio 39 to 858, when expressed as a fraction in lowest terms, is 1/22 after dividing both numbers by their greatest common divisor, which is 39.
Step-by-step explanation:
To express the ratio 39 to 858 as a fraction in lowest terms, we will first write the ratio as a fraction:
39/858.
Next, we look for the greatest common divisor (GCD) of both numbers to simplify the fraction. After calculation, we find that the GCD of 39 and 858 is 39. Thus, we divide both the numerator and the denominator by 39 to get the fraction in its lowest terms:
39/858 = 1/22.
Therefore, the ratio 39 to 858 expressed as a fraction in lowest terms is 1/22.