Add 20/21 and 4/84
20/21 + 4/84 is 1/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
20/21 = 20 × 4/21 × 4 = 80/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
4/84 = 4 × 1/84 × 1 = 4/84 - Add the two like fractions:
80/84 + 4/84 = 80 + 4/84 = 84/84 - 84/84 simplified gives 1/1
- So, 20/21 + 4/84 = 1/1
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