Add 1/21 and 30/64
1/21 + 30/64 is 347/672.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 64 is 1344
Next, find the equivalent fraction of both fractional numbers with denominator 1344 - For the 1st fraction, since 21 × 64 = 1344,
1/21 = 1 × 64/21 × 64 = 64/1344 - Likewise, for the 2nd fraction, since 64 × 21 = 1344,
30/64 = 30 × 21/64 × 21 = 630/1344 - Add the two like fractions:
64/1344 + 630/1344 = 64 + 630/1344 = 694/1344 - 694/1344 simplified gives 347/672
- So, 1/21 + 30/64 = 347/672
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