Add 30/20 and 1/21
1st number: 1 10/20, 2nd number: 1/21
30/20 + 1/21 is 65/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 21 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
30/20 = 30 × 21/20 × 21 = 630/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
1/21 = 1 × 20/21 × 20 = 20/420 - Add the two like fractions:
630/420 + 20/420 = 630 + 20/420 = 650/420 - 650/420 simplified gives 65/42
- So, 30/20 + 1/21 = 65/42
In mixed form: 123/42
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