Add 72/15 and 21/72
1st number: 4 12/15, 2nd number: 21/72
72/15 + 21/72 is 611/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 15 × 24 = 360,
72/15 = 72 × 24/15 × 24 = 1728/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
21/72 = 21 × 5/72 × 5 = 105/360 - Add the two like fractions:
1728/360 + 105/360 = 1728 + 105/360 = 1833/360 - 1833/360 simplified gives 611/120
- So, 72/15 + 21/72 = 611/120
In mixed form: 511/120
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