Add 21/45 and 72/27
1st number: 21/45, 2nd number: 2 18/27
21/45 + 72/27 is 47/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 27 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 45 × 3 = 135,
21/45 = 21 × 3/45 × 3 = 63/135 - Likewise, for the 2nd fraction, since 27 × 5 = 135,
72/27 = 72 × 5/27 × 5 = 360/135 - Add the two like fractions:
63/135 + 360/135 = 63 + 360/135 = 423/135 - 423/135 simplified gives 47/15
- So, 21/45 + 72/27 = 47/15
In mixed form: 32/15
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