Add 72/21 and 45/14
1st number: 3 9/21, 2nd number: 3 3/14
72/21 + 45/14 is 93/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 14 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
72/21 = 72 × 2/21 × 2 = 144/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
45/14 = 45 × 3/14 × 3 = 135/42 - Add the two like fractions:
144/42 + 135/42 = 144 + 135/42 = 279/42 - 279/42 simplified gives 93/14
- So, 72/21 + 45/14 = 93/14
In mixed form: 69/14
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