Add 21/48 and 64/90
21/48 + 64/90 is 827/720.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 48 × 15 = 720,
21/48 = 21 × 15/48 × 15 = 315/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
64/90 = 64 × 8/90 × 8 = 512/720 - Add the two like fractions:
315/720 + 512/720 = 315 + 512/720 = 827/720 - So, 21/48 + 64/90 = 827/720
In mixed form: 1107/720
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