Add 20/8 and 21/90
1st number: 2 4/8, 2nd number: 21/90
20/8 + 21/90 is 41/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 8 × 45 = 360,
20/8 = 20 × 45/8 × 45 = 900/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
21/90 = 21 × 4/90 × 4 = 84/360 - Add the two like fractions:
900/360 + 84/360 = 900 + 84/360 = 984/360 - 984/360 simplified gives 41/15
- So, 20/8 + 21/90 = 41/15
In mixed form: 211/15
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