Add 28/70 and 21/10
1st number: 28/70, 2nd number: 2 1/10
28/70 + 21/10 is 5/2.
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,
28/70 = 28 × 1/70 × 1 = 28/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
21/10 = 21 × 7/10 × 7 = 147/70 - Add the two like fractions:
28/70 + 147/70 = 28 + 147/70 = 175/70 - 175/70 simplified gives 5/2
- So, 28/70 + 21/10 = 5/2
In mixed form: 21/2
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