Add 72/40 and 49/28
1st number: 1 32/40, 2nd number: 1 21/28
72/40 + 49/28 is 71/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 28 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
72/40 = 72 × 7/40 × 7 = 504/280 - Likewise, for the 2nd fraction, since 28 × 10 = 280,
49/28 = 49 × 10/28 × 10 = 490/280 - Add the two like fractions:
504/280 + 490/280 = 504 + 490/280 = 994/280 - 994/280 simplified gives 71/20
- So, 72/40 + 49/28 = 71/20
In mixed form: 311/20
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