Add 5/21 and 42/30
1st number: 5/21, 2nd number: 1 12/30
5/21 + 42/30 is 172/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
5/21 = 5 × 10/21 × 10 = 50/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
42/30 = 42 × 7/30 × 7 = 294/210 - Add the two like fractions:
50/210 + 294/210 = 50 + 294/210 = 344/210 - 344/210 simplified gives 172/105
- So, 5/21 + 42/30 = 172/105
In mixed form: 167/105
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