Add 21/8 and 9/70
1st number: 2 5/8, 2nd number: 9/70
21/8 + 9/70 is 771/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 8 × 35 = 280,
21/8 = 21 × 35/8 × 35 = 735/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
9/70 = 9 × 4/70 × 4 = 36/280 - Add the two like fractions:
735/280 + 36/280 = 735 + 36/280 = 771/280 - So, 21/8 + 9/70 = 771/280
In mixed form: 2211/280
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