Add 42/5 and 21/40
1st number: 8 2/5, 2nd number: 21/40
42/5 + 21/40 is 357/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 5 × 8 = 40,
42/5 = 42 × 8/5 × 8 = 336/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
21/40 = 21 × 1/40 × 1 = 21/40 - Add the two like fractions:
336/40 + 21/40 = 336 + 21/40 = 357/40 - So, 42/5 + 21/40 = 357/40
In mixed form: 837/40
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