Add 63/72 and 21/15
1st number: 63/72, 2nd number: 1 6/15
63/72 + 21/15 is 91/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 15 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
63/72 = 63 × 5/72 × 5 = 315/360 - Likewise, for the 2nd fraction, since 15 × 24 = 360,
21/15 = 21 × 24/15 × 24 = 504/360 - Add the two like fractions:
315/360 + 504/360 = 315 + 504/360 = 819/360 - 819/360 simplified gives 91/40
- So, 63/72 + 21/15 = 91/40
In mixed form: 211/40
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