Add 20/7 and 72/9
1st number: 2 6/7, 2nd number: 8 0/9
20/7 + 72/9 is 76/7.
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,
20/7 = 20 × 9/7 × 9 = 180/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
72/9 = 72 × 7/9 × 7 = 504/63 - Add the two like fractions:
180/63 + 504/63 = 180 + 504/63 = 684/63 - 684/63 simplified gives 76/7
- So, 20/7 + 72/9 = 76/7
In mixed form: 106/7
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