Add 21/70 and 28/10
1st number: 21/70, 2nd number: 2 8/10
21/70 + 28/10 is 31/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 10 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 70 × 1 = 70,
21/70 = 21 × 1/70 × 1 = 21/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
28/10 = 28 × 7/10 × 7 = 196/70 - Add the two like fractions:
21/70 + 196/70 = 21 + 196/70 = 217/70 - 217/70 simplified gives 31/10
- So, 21/70 + 28/10 = 31/10
In mixed form: 31/10
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