Add 90/72 and 30/81
1st number: 1 18/72, 2nd number: 30/81
90/72 + 30/81 is 175/108.
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,
90/72 = 90 × 9/72 × 9 = 810/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
30/81 = 30 × 8/81 × 8 = 240/648 - Add the two like fractions:
810/648 + 240/648 = 810 + 240/648 = 1050/648 - 1050/648 simplified gives 175/108
- So, 90/72 + 30/81 = 175/108
In mixed form: 167/108
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