Add 81/40 and 84/63
1st number: 2 1/40, 2nd number: 1 21/63
81/40 + 84/63 is 403/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 63 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 40 × 63 = 2520,
81/40 = 81 × 63/40 × 63 = 5103/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
84/63 = 84 × 40/63 × 40 = 3360/2520 - Add the two like fractions:
5103/2520 + 3360/2520 = 5103 + 3360/2520 = 8463/2520 - 8463/2520 simplified gives 403/120
- So, 81/40 + 84/63 = 403/120
In mixed form: 343/120
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