Add 21/30 and 42/10
1st number: 21/30, 2nd number: 4 2/10
21/30 + 42/10 is 49/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 10 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 30 × 1 = 30,
21/30 = 21 × 1/30 × 1 = 21/30 - Likewise, for the 2nd fraction, since 10 × 3 = 30,
42/10 = 42 × 3/10 × 3 = 126/30 - Add the two like fractions:
21/30 + 126/30 = 21 + 126/30 = 147/30 - 147/30 simplified gives 49/10
- So, 21/30 + 42/10 = 49/10
In mixed form: 49/10
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