Add 20/40 and 21/10
1st number: 20/40, 2nd number: 2 1/10
20/40 + 21/10 is 13/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 10 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
20/40 = 20 × 1/40 × 1 = 20/40 - Likewise, for the 2nd fraction, since 10 × 4 = 40,
21/10 = 21 × 4/10 × 4 = 84/40 - Add the two like fractions:
20/40 + 84/40 = 20 + 84/40 = 104/40 - 104/40 simplified gives 13/5
- So, 20/40 + 21/10 = 13/5
In mixed form: 23/5
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