Add 21/70 and 5/28
21/70 + 5/28 is 67/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 28 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
21/70 = 21 × 2/70 × 2 = 42/140 - Likewise, for the 2nd fraction, since 28 × 5 = 140,
5/28 = 5 × 5/28 × 5 = 25/140 - Add the two like fractions:
42/140 + 25/140 = 42 + 25/140 = 67/140 - So, 21/70 + 5/28 = 67/140
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