Add 72/63 and 21/42
1st number: 1 9/63, 2nd number: 21/42
72/63 + 21/42 is 23/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 63 × 2 = 126,
72/63 = 72 × 2/63 × 2 = 144/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
21/42 = 21 × 3/42 × 3 = 63/126 - Add the two like fractions:
144/126 + 63/126 = 144 + 63/126 = 207/126 - 207/126 simplified gives 23/14
- So, 72/63 + 21/42 = 23/14
In mixed form: 19/14
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