Solutions by everydaycalculation.com

8/15 + 7/20 is 53/60.

1. Find the least common denominator or LCM of the two denominators:
LCM of 15 and 20 is 60

Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 15 × 4 = 60,
8/15 = 8 × 4/15 × 4 = 32/60
3. Likewise, for the 2nd fraction, since 20 × 3 = 60,
7/20 = 7 × 3/20 × 3 = 21/60
4. Add the two like fractions:
32/60 + 21/60 = 32 + 21/60 = 53/60
5. So, 8/15 + 7/20 = 53/60

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