**1. Find a common denominator**for 1/2 and 1/8. The value of that denominator will be a common multiple of 2 and 8. It is often convenient to use the Least Common Multiple (LCM), but any will do. In this case, 8 is a multiple of 2, so 8 is a suitable common denominator.

**2. Express each fraction as an equivalent**with the denominator found in the first step.

1/2 = 4/8

3/8 = 3/8

**3. Add the numerators**of these similar fractions. Express the sum over the denominator.

(4/8) + (3/8) = (4+3)/8 = 7/8