Add 20/4 and 21/42
1st number: 5 0/4, 2nd number: 21/42
20/4 + 21/42 is 11/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
20/4 = 20 × 21/4 × 21 = 420/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
21/42 = 21 × 2/42 × 2 = 42/84 - Add the two like fractions:
420/84 + 42/84 = 420 + 42/84 = 462/84 - 462/84 simplified gives 11/2
- So, 20/4 + 21/42 = 11/2
In mixed form: 51/2
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