Add 20/15 and 21/72
1st number: 1 5/15, 2nd number: 21/72
20/15 + 21/72 is 13/8.
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,
20/15 = 20 × 24/15 × 24 = 480/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
21/72 = 21 × 5/72 × 5 = 105/360 - Add the two like fractions:
480/360 + 105/360 = 480 + 105/360 = 585/360 - 585/360 simplified gives 13/8
- So, 20/15 + 21/72 = 13/8
In mixed form: 15/8
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