Add 30/42 and 80/15
1st number: 30/42, 2nd number: 5 5/15
30/42 + 80/15 is 127/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
30/42 = 30 × 5/42 × 5 = 150/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
80/15 = 80 × 14/15 × 14 = 1120/210 - Add the two like fractions:
150/210 + 1120/210 = 150 + 1120/210 = 1270/210 - 1270/210 simplified gives 127/21
- So, 30/42 + 80/15 = 127/21
In mixed form: 61/21
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