Add 63/70 and 20/81
63/70 + 20/81 is 929/810.
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,
63/70 = 63 × 81/70 × 81 = 5103/5670 - Likewise, for the 2nd fraction, since 81 × 70 = 5670,
20/81 = 20 × 70/81 × 70 = 1400/5670 - Add the two like fractions:
5103/5670 + 1400/5670 = 5103 + 1400/5670 = 6503/5670 - 6503/5670 simplified gives 929/810
- So, 63/70 + 20/81 = 929/810
In mixed form: 1119/810
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