Add 81/9 and 21/7
1st number: 9 0/9, 2nd number: 3 0/7
81/9 + 21/7 is 12/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 7 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
81/9 = 81 × 7/9 × 7 = 567/63 - Likewise, for the 2nd fraction, since 7 × 9 = 63,
21/7 = 21 × 9/7 × 9 = 189/63 - Add the two like fractions:
567/63 + 189/63 = 567 + 189/63 = 756/63 - 756/63 simplified gives 12/1
- So, 81/9 + 21/7 = 12/1
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