Add 21/30 and 30/72
21/30 + 30/72 is 67/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 30 × 12 = 360,
21/30 = 21 × 12/30 × 12 = 252/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
30/72 = 30 × 5/72 × 5 = 150/360 - Add the two like fractions:
252/360 + 150/360 = 252 + 150/360 = 402/360 - 402/360 simplified gives 67/60
- So, 21/30 + 30/72 = 67/60
In mixed form: 17/60
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