Add 21/27 and 4/45
21/27 + 4/45 is 13/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 45 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 27 × 5 = 135,
21/27 = 21 × 5/27 × 5 = 105/135 - Likewise, for the 2nd fraction, since 45 × 3 = 135,
4/45 = 4 × 3/45 × 3 = 12/135 - Add the two like fractions:
105/135 + 12/135 = 105 + 12/135 = 117/135 - 117/135 simplified gives 13/15
- So, 21/27 + 4/45 = 13/15
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