Add 3/28 and 42/40
1st number: 3/28, 2nd number: 1 2/40
3/28 + 42/40 is 81/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
3/28 = 3 × 10/28 × 10 = 30/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
42/40 = 42 × 7/40 × 7 = 294/280 - Add the two like fractions:
30/280 + 294/280 = 30 + 294/280 = 324/280 - 324/280 simplified gives 81/70
- So, 3/28 + 42/40 = 81/70
In mixed form: 111/70
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