Add 80/30 and 15/70
1st number: 2 20/30, 2nd number: 15/70
80/30 + 15/70 is 121/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
80/30 = 80 × 7/30 × 7 = 560/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
15/70 = 15 × 3/70 × 3 = 45/210 - Add the two like fractions:
560/210 + 45/210 = 560 + 45/210 = 605/210 - 605/210 simplified gives 121/42
- So, 80/30 + 15/70 = 121/42
In mixed form: 237/42
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