Add 63/42 and 81/40
1st number: 1 21/42, 2nd number: 2 1/40
63/42 + 81/40 is 141/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 42 × 20 = 840,
63/42 = 63 × 20/42 × 20 = 1260/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
81/40 = 81 × 21/40 × 21 = 1701/840 - Add the two like fractions:
1260/840 + 1701/840 = 1260 + 1701/840 = 2961/840 - 2961/840 simplified gives 141/40
- So, 63/42 + 81/40 = 141/40
In mixed form: 321/40
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