Add 3/72 and 42/20
1st number: 3/72, 2nd number: 2 2/20
3/72 + 42/20 is 257/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 20 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
3/72 = 3 × 5/72 × 5 = 15/360 - Likewise, for the 2nd fraction, since 20 × 18 = 360,
42/20 = 42 × 18/20 × 18 = 756/360 - Add the two like fractions:
15/360 + 756/360 = 15 + 756/360 = 771/360 - 771/360 simplified gives 257/120
- So, 3/72 + 42/20 = 257/120
In mixed form: 217/120
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