Add 21/45 and 9/16
21/45 + 9/16 is 247/240.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 16 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
21/45 = 21 × 16/45 × 16 = 336/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
9/16 = 9 × 45/16 × 45 = 405/720 - Add the two like fractions:
336/720 + 405/720 = 336 + 405/720 = 741/720 - 741/720 simplified gives 247/240
- So, 21/45 + 9/16 = 247/240
In mixed form: 17/240
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