Add 20/70 and 63/81
20/70 + 63/81 is 67/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 81 is 5670
Next, find the equivalent fraction of both fractional numbers with denominator 5670 - For the 1st fraction, since 70 × 81 = 5670,
20/70 = 20 × 81/70 × 81 = 1620/5670 - Likewise, for the 2nd fraction, since 81 × 70 = 5670,
63/81 = 63 × 70/81 × 70 = 4410/5670 - Add the two like fractions:
1620/5670 + 4410/5670 = 1620 + 4410/5670 = 6030/5670 - 6030/5670 simplified gives 67/63
- So, 20/70 + 63/81 = 67/63
In mixed form: 14/63
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