Add 90/8 and 21/84
1st number: 11 2/8, 2nd number: 21/84
90/8 + 21/84 is 23/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 84 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
90/8 = 90 × 21/8 × 21 = 1890/168 - Likewise, for the 2nd fraction, since 84 × 2 = 168,
21/84 = 21 × 2/84 × 2 = 42/168 - Add the two like fractions:
1890/168 + 42/168 = 1890 + 42/168 = 1932/168 - 1932/168 simplified gives 23/2
- So, 90/8 + 21/84 = 23/2
In mixed form: 111/2
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