Add 21/16 and 20/45
1st number: 1 5/16, 2nd number: 20/45
21/16 + 20/45 is 253/144.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 16 × 45 = 720,
21/16 = 21 × 45/16 × 45 = 945/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
20/45 = 20 × 16/45 × 16 = 320/720 - Add the two like fractions:
945/720 + 320/720 = 945 + 320/720 = 1265/720 - 1265/720 simplified gives 253/144
- So, 21/16 + 20/45 = 253/144
In mixed form: 1109/144
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