Add 28/15 and 5/42
1st number: 1 13/15, 2nd number: 5/42
28/15 + 5/42 is 139/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
28/15 = 28 × 14/15 × 14 = 392/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
5/42 = 5 × 5/42 × 5 = 25/210 - Add the two like fractions:
392/210 + 25/210 = 392 + 25/210 = 417/210 - 417/210 simplified gives 139/70
- So, 28/15 + 5/42 = 139/70
In mixed form: 169/70
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