Add 28/70 and 21/9
1st number: 28/70, 2nd number: 2 3/9
28/70 + 21/9 is 41/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 9 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
28/70 = 28 × 9/70 × 9 = 252/630 - Likewise, for the 2nd fraction, since 9 × 70 = 630,
21/9 = 21 × 70/9 × 70 = 1470/630 - Add the two like fractions:
252/630 + 1470/630 = 252 + 1470/630 = 1722/630 - 1722/630 simplified gives 41/15
- So, 28/70 + 21/9 = 41/15
In mixed form: 211/15
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