Add 21/72 and 25/30
21/72 + 25/30 is 9/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 30 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
21/72 = 21 × 5/72 × 5 = 105/360 - Likewise, for the 2nd fraction, since 30 × 12 = 360,
25/30 = 25 × 12/30 × 12 = 300/360 - Add the two like fractions:
105/360 + 300/360 = 105 + 300/360 = 405/360 - 405/360 simplified gives 9/8
- So, 21/72 + 25/30 = 9/8
In mixed form: 11/8
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