Add 28/15 and 42/40
1st number: 1 13/15, 2nd number: 1 2/40
28/15 + 42/40 is 35/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
28/15 = 28 × 8/15 × 8 = 224/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
42/40 = 42 × 3/40 × 3 = 126/120 - Add the two like fractions:
224/120 + 126/120 = 224 + 126/120 = 350/120 - 350/120 simplified gives 35/12
- So, 28/15 + 42/40 = 35/12
In mixed form: 211/12
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