Add 72/45 and 21/30
1st number: 1 27/45, 2nd number: 21/30
72/45 + 21/30 is 23/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
72/45 = 72 × 2/45 × 2 = 144/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
21/30 = 21 × 3/30 × 3 = 63/90 - Add the two like fractions:
144/90 + 63/90 = 144 + 63/90 = 207/90 - 207/90 simplified gives 23/10
- So, 72/45 + 21/30 = 23/10
In mixed form: 23/10
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