Add 15/70 and 30/20
1st number: 15/70, 2nd number: 1 10/20
15/70 + 30/20 is 12/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
15/70 = 15 × 2/70 × 2 = 30/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
30/20 = 30 × 7/20 × 7 = 210/140 - Add the two like fractions:
30/140 + 210/140 = 30 + 210/140 = 240/140 - 240/140 simplified gives 12/7
- So, 15/70 + 30/20 = 12/7
In mixed form: 15/7
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