Add 72/18 and 63/42
1st number: 4 0/18, 2nd number: 1 21/42
72/18 + 63/42 is 11/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
72/18 = 72 × 7/18 × 7 = 504/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
63/42 = 63 × 3/42 × 3 = 189/126 - Add the two like fractions:
504/126 + 189/126 = 504 + 189/126 = 693/126 - 693/126 simplified gives 11/2
- So, 72/18 + 63/42 = 11/2
In mixed form: 51/2
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