Add 12/5 and 21/70
1st number: 2 2/5, 2nd number: 21/70
12/5 + 21/70 is 27/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 5 × 14 = 70,
12/5 = 12 × 14/5 × 14 = 168/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
21/70 = 21 × 1/70 × 1 = 21/70 - Add the two like fractions:
168/70 + 21/70 = 168 + 21/70 = 189/70 - 189/70 simplified gives 27/10
- So, 12/5 + 21/70 = 27/10
In mixed form: 27/10
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