Add 84/7 and 72/9
1st number: 12 0/7, 2nd number: 8 0/9
84/7 + 72/9 is 20/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
84/7 = 84 × 9/7 × 9 = 756/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
72/9 = 72 × 7/9 × 7 = 504/63 - Add the two like fractions:
756/63 + 504/63 = 756 + 504/63 = 1260/63 - 1260/63 simplified gives 20/1
- So, 84/7 + 72/9 = 20/1
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