Add 42/40 and 21/63
1st number: 1 2/40, 2nd number: 21/63
42/40 + 21/63 is 83/60.
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,
42/40 = 42 × 63/40 × 63 = 2646/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
21/63 = 21 × 40/63 × 40 = 840/2520 - Add the two like fractions:
2646/2520 + 840/2520 = 2646 + 840/2520 = 3486/2520 - 3486/2520 simplified gives 83/60
- So, 42/40 + 21/63 = 83/60
In mixed form: 123/60
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