Add 42/96 and 21/40
42/96 + 21/40 is 77/80.
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,
42/96 = 42 × 5/96 × 5 = 210/480 - Likewise, for the 2nd fraction, since 40 × 12 = 480,
21/40 = 21 × 12/40 × 12 = 252/480 - Add the two like fractions:
210/480 + 252/480 = 210 + 252/480 = 462/480 - 462/480 simplified gives 77/80
- So, 42/96 + 21/40 = 77/80
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