Add 7/16 and 21/40
7/16 + 21/40 is 77/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 40 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
7/16 = 7 × 5/16 × 5 = 35/80 - Likewise, for the 2nd fraction, since 40 × 2 = 80,
21/40 = 21 × 2/40 × 2 = 42/80 - Add the two like fractions:
35/80 + 42/80 = 35 + 42/80 = 77/80 - So, 7/16 + 21/40 = 77/80
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