1) The fraction $\frac{48}{16}$ reduced to lowest terms is

Step 1 ：Given the fraction \(\frac{48}{16}\)

Step 2 ：To reduce a fraction to its lowest terms, we need to find the greatest common divisor (GCD) of the numerator and the denominator. Then, we divide both the numerator and the denominator by the GCD.

Step 3 ：In this case, we need to find the GCD of 48 and 16.

Step 4 ：The GCD of 48 and 16 is 16.

Step 5 ：Divide the numerator and the denominator by the GCD.

Step 6 ：The reduced numerator is 3 and the reduced denominator is 1.

Step 7 ：So, the fraction \(\frac{48}{16}\) reduced to lowest terms is \(\boxed{3}\)