Add 20/90 and 54/15
1st number: 20/90, 2nd number: 3 9/15
20/90 + 54/15 is 172/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
20/90 = 20 × 1/90 × 1 = 20/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
54/15 = 54 × 6/15 × 6 = 324/90 - Add the two like fractions:
20/90 + 324/90 = 20 + 324/90 = 344/90 - 344/90 simplified gives 172/45
- So, 20/90 + 54/15 = 172/45
In mixed form: 337/45
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