Add 72/21 and 18/7
1st number: 3 9/21, 2nd number: 2 4/7
72/21 + 18/7 is 6/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 21 × 1 = 21,
72/21 = 72 × 1/21 × 1 = 72/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
18/7 = 18 × 3/7 × 3 = 54/21 - Add the two like fractions:
72/21 + 54/21 = 72 + 54/21 = 126/21 - 126/21 simplified gives 6/1
- So, 72/21 + 18/7 = 6/1
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