Add 72/63 and 42/20
1st number: 1 9/63, 2nd number: 2 2/20
72/63 + 42/20 is 227/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 20 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 63 × 20 = 1260,
72/63 = 72 × 20/63 × 20 = 1440/1260 - Likewise, for the 2nd fraction, since 20 × 63 = 1260,
42/20 = 42 × 63/20 × 63 = 2646/1260 - Add the two like fractions:
1440/1260 + 2646/1260 = 1440 + 2646/1260 = 4086/1260 - 4086/1260 simplified gives 227/70
- So, 72/63 + 42/20 = 227/70
In mixed form: 317/70
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