Add 21/90 and 84/18
1st number: 21/90, 2nd number: 4 12/18
21/90 + 84/18 is 49/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
21/90 = 21 × 1/90 × 1 = 21/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
84/18 = 84 × 5/18 × 5 = 420/90 - Add the two like fractions:
21/90 + 420/90 = 21 + 420/90 = 441/90 - 441/90 simplified gives 49/10
- So, 21/90 + 84/18 = 49/10
In mixed form: 49/10
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