Add 15/70 and 21/9
1st number: 15/70, 2nd number: 2 3/9
15/70 + 21/9 is 107/42.
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,
15/70 = 15 × 9/70 × 9 = 135/630 - Likewise, for the 2nd fraction, since 9 × 70 = 630,
21/9 = 21 × 70/9 × 70 = 1470/630 - Add the two like fractions:
135/630 + 1470/630 = 135 + 1470/630 = 1605/630 - 1605/630 simplified gives 107/42
- So, 15/70 + 21/9 = 107/42
In mixed form: 223/42
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