Add 10/72 and 42/81
10/72 + 42/81 is 71/108.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 81 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 72 × 9 = 648,
10/72 = 10 × 9/72 × 9 = 90/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
42/81 = 42 × 8/81 × 8 = 336/648 - Add the two like fractions:
90/648 + 336/648 = 90 + 336/648 = 426/648 - 426/648 simplified gives 71/108
- So, 10/72 + 42/81 = 71/108
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