Add 7/56 and 20/81
7/56 + 20/81 is 241/648.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 81 is 4536
Next, find the equivalent fraction of both fractional numbers with denominator 4536 - For the 1st fraction, since 56 × 81 = 4536,
7/56 = 7 × 81/56 × 81 = 567/4536 - Likewise, for the 2nd fraction, since 81 × 56 = 4536,
20/81 = 20 × 56/81 × 56 = 1120/4536 - Add the two like fractions:
567/4536 + 1120/4536 = 567 + 1120/4536 = 1687/4536 - 1687/4536 simplified gives 241/648
- So, 7/56 + 20/81 = 241/648
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