Add 7/84 and 81/70
1st number: 7/84, 2nd number: 1 11/70
7/84 + 81/70 is 521/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
7/84 = 7 × 5/84 × 5 = 35/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
81/70 = 81 × 6/70 × 6 = 486/420 - Add the two like fractions:
35/420 + 486/420 = 35 + 486/420 = 521/420 - So, 7/84 + 81/70 = 521/420
In mixed form: 1101/420
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