Add 15/8 and 21/70
1st number: 1 7/8, 2nd number: 21/70
15/8 + 21/70 is 87/40.
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,
15/8 = 15 × 35/8 × 35 = 525/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
21/70 = 21 × 4/70 × 4 = 84/280 - Add the two like fractions:
525/280 + 84/280 = 525 + 84/280 = 609/280 - 609/280 simplified gives 87/40
- So, 15/8 + 21/70 = 87/40
In mixed form: 27/40
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