Add 15/16 and 21/90
15/16 + 21/90 is 281/240.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 16 × 45 = 720,
15/16 = 15 × 45/16 × 45 = 675/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
21/90 = 21 × 8/90 × 8 = 168/720 - Add the two like fractions:
675/720 + 168/720 = 675 + 168/720 = 843/720 - 843/720 simplified gives 281/240
- So, 15/16 + 21/90 = 281/240
In mixed form: 141/240
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