Add 45/20 and 72/27
1st number: 2 5/20, 2nd number: 2 18/27
45/20 + 72/27 is 59/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 27 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 20 × 27 = 540,
45/20 = 45 × 27/20 × 27 = 1215/540 - Likewise, for the 2nd fraction, since 27 × 20 = 540,
72/27 = 72 × 20/27 × 20 = 1440/540 - Add the two like fractions:
1215/540 + 1440/540 = 1215 + 1440/540 = 2655/540 - 2655/540 simplified gives 59/12
- So, 45/20 + 72/27 = 59/12
In mixed form: 411/12
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