Add 54/7 and 81/70
1st number: 7 5/7, 2nd number: 1 11/70
54/7 + 81/70 is 621/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
54/7 = 54 × 10/7 × 10 = 540/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
81/70 = 81 × 1/70 × 1 = 81/70 - Add the two like fractions:
540/70 + 81/70 = 540 + 81/70 = 621/70 - So, 54/7 + 81/70 = 621/70
In mixed form: 861/70
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