Add 80/70 and 20/15
1st number: 1 10/70, 2nd number: 1 5/15
80/70 + 20/15 is 52/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
80/70 = 80 × 3/70 × 3 = 240/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
20/15 = 20 × 14/15 × 14 = 280/210 - Add the two like fractions:
240/210 + 280/210 = 240 + 280/210 = 520/210 - 520/210 simplified gives 52/21
- So, 80/70 + 20/15 = 52/21
In mixed form: 210/21
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