Add 90/21 and 9/8
1st number: 4 6/21, 2nd number: 1 1/8
90/21 + 9/8 is 303/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
90/21 = 90 × 8/21 × 8 = 720/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
9/8 = 9 × 21/8 × 21 = 189/168 - Add the two like fractions:
720/168 + 189/168 = 720 + 189/168 = 909/168 - 909/168 simplified gives 303/56
- So, 90/21 + 9/8 = 303/56
In mixed form: 523/56
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