Add 21/14 and 42/70
1st number: 1 7/14, 2nd number: 42/70
21/14 + 42/70 is 21/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 14 × 5 = 70,
21/14 = 21 × 5/14 × 5 = 105/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
42/70 = 42 × 1/70 × 1 = 42/70 - Add the two like fractions:
105/70 + 42/70 = 105 + 42/70 = 147/70 - 147/70 simplified gives 21/10
- So, 21/14 + 42/70 = 21/10
In mixed form: 21/10
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