Add 72/40 and 45/28
1st number: 1 32/40, 2nd number: 1 17/28
72/40 + 45/28 is 477/140.
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,
45/28 = 45 × 10/28 × 10 = 450/280 - Add the two like fractions:
504/280 + 450/280 = 504 + 450/280 = 954/280 - 954/280 simplified gives 477/140
- So, 72/40 + 45/28 = 477/140
In mixed form: 357/140
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