Add 2/30 and 42/21
1st number: 2/30, 2nd number: 2 0/21
2/30 + 42/21 is 31/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
2/30 = 2 × 7/30 × 7 = 14/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
42/21 = 42 × 10/21 × 10 = 420/210 - Add the two like fractions:
14/210 + 420/210 = 14 + 420/210 = 434/210 - 434/210 simplified gives 31/15
- So, 2/30 + 42/21 = 31/15
In mixed form: 21/15
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