Add 20/84 and 50/21
1st number: 20/84, 2nd number: 2 8/21
20/84 + 50/21 is 55/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
20/84 = 20 × 1/84 × 1 = 20/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
50/21 = 50 × 4/21 × 4 = 200/84 - Add the two like fractions:
20/84 + 200/84 = 20 + 200/84 = 220/84 - 220/84 simplified gives 55/21
- So, 20/84 + 50/21 = 55/21
In mixed form: 213/21
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