Add 18/40 and 42/28
1st number: 18/40, 2nd number: 1 14/28
18/40 + 42/28 is 39/20.
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,
18/40 = 18 × 7/40 × 7 = 126/280 - Likewise, for the 2nd fraction, since 28 × 10 = 280,
42/28 = 42 × 10/28 × 10 = 420/280 - Add the two like fractions:
126/280 + 420/280 = 126 + 420/280 = 546/280 - 546/280 simplified gives 39/20
- So, 18/40 + 42/28 = 39/20
In mixed form: 119/20
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