Add 21/64 and 16/90
21/64 + 16/90 is 1457/2880.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 90 is 2880
Next, find the equivalent fraction of both fractional numbers with denominator 2880 - For the 1st fraction, since 64 × 45 = 2880,
21/64 = 21 × 45/64 × 45 = 945/2880 - Likewise, for the 2nd fraction, since 90 × 32 = 2880,
16/90 = 16 × 32/90 × 32 = 512/2880 - Add the two like fractions:
945/2880 + 512/2880 = 945 + 512/2880 = 1457/2880 - So, 21/64 + 16/90 = 1457/2880
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