Add 21/8 and 15/70
1st number: 2 5/8, 2nd number: 15/70
21/8 + 15/70 is 159/56.
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,
15/70 = 15 × 4/70 × 4 = 60/280 - Add the two like fractions:
735/280 + 60/280 = 735 + 60/280 = 795/280 - 795/280 simplified gives 159/56
- So, 21/8 + 15/70 = 159/56
In mixed form: 247/56
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