Add 72/5 and 21/7
1st number: 14 2/5, 2nd number: 3 0/7
72/5 + 21/7 is 87/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 7 is 35
Next, find the equivalent fraction of both fractional numbers with denominator 35 - For the 1st fraction, since 5 × 7 = 35,
72/5 = 72 × 7/5 × 7 = 504/35 - Likewise, for the 2nd fraction, since 7 × 5 = 35,
21/7 = 21 × 5/7 × 5 = 105/35 - Add the two like fractions:
504/35 + 105/35 = 504 + 105/35 = 609/35 - 609/35 simplified gives 87/5
- So, 72/5 + 21/7 = 87/5
In mixed form: 172/5
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