Add 21/90 and 56/20
1st number: 21/90, 2nd number: 2 16/20
21/90 + 56/20 is 91/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
21/90 = 21 × 2/90 × 2 = 42/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
56/20 = 56 × 9/20 × 9 = 504/180 - Add the two like fractions:
42/180 + 504/180 = 42 + 504/180 = 546/180 - 546/180 simplified gives 91/30
- So, 21/90 + 56/20 = 91/30
In mixed form: 31/30
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