Add 90/96 and 21/40
90/96 + 21/40 is 117/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 96 and 40 is 480
Next, find the equivalent fraction of both fractional numbers with denominator 480 - For the 1st fraction, since 96 × 5 = 480,
90/96 = 90 × 5/96 × 5 = 450/480 - Likewise, for the 2nd fraction, since 40 × 12 = 480,
21/40 = 21 × 12/40 × 12 = 252/480 - Add the two like fractions:
450/480 + 252/480 = 450 + 252/480 = 702/480 - 702/480 simplified gives 117/80
- So, 90/96 + 21/40 = 117/80
In mixed form: 137/80
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