Add 27/15 and 21/70
1st number: 1 12/15, 2nd number: 21/70
27/15 + 21/70 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
27/15 = 27 × 14/15 × 14 = 378/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
21/70 = 21 × 3/70 × 3 = 63/210 - Add the two like fractions:
378/210 + 63/210 = 378 + 63/210 = 441/210 - 441/210 simplified gives 21/10
- So, 27/15 + 21/70 = 21/10
In mixed form: 21/10
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