Add 20/21 and 30/56
20/21 + 30/56 is 125/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
20/21 = 20 × 8/21 × 8 = 160/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
30/56 = 30 × 3/56 × 3 = 90/168 - Add the two like fractions:
160/168 + 90/168 = 160 + 90/168 = 250/168 - 250/168 simplified gives 125/84
- So, 20/21 + 30/56 = 125/84
In mixed form: 141/84
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