Add 21/90 and 45/16
1st number: 21/90, 2nd number: 2 13/16
21/90 + 45/16 is 731/240.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 16 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
21/90 = 21 × 8/90 × 8 = 168/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
45/16 = 45 × 45/16 × 45 = 2025/720 - Add the two like fractions:
168/720 + 2025/720 = 168 + 2025/720 = 2193/720 - 2193/720 simplified gives 731/240
- So, 21/90 + 45/16 = 731/240
In mixed form: 311/240
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