Add 40/42 and 72/63
1st number: 40/42, 2nd number: 1 9/63
40/42 + 72/63 is 44/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
40/42 = 40 × 3/42 × 3 = 120/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
72/63 = 72 × 2/63 × 2 = 144/126 - Add the two like fractions:
120/126 + 144/126 = 120 + 144/126 = 264/126 - 264/126 simplified gives 44/21
- So, 40/42 + 72/63 = 44/21
In mixed form: 22/21
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