Add 21/10 and 42/30
1st number: 2 1/10, 2nd number: 1 12/30
21/10 + 42/30 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 10 × 3 = 30,
21/10 = 21 × 3/10 × 3 = 63/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
42/30 = 42 × 1/30 × 1 = 42/30 - Add the two like fractions:
63/30 + 42/30 = 63 + 42/30 = 105/30 - 105/30 simplified gives 7/2
- So, 21/10 + 42/30 = 7/2
In mixed form: 31/2
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