Add 42/21 and 28/30
1st number: 2 0/21, 2nd number: 28/30
42/21 + 28/30 is 44/15.
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,
42/21 = 42 × 10/21 × 10 = 420/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
28/30 = 28 × 7/30 × 7 = 196/210 - Add the two like fractions:
420/210 + 196/210 = 420 + 196/210 = 616/210 - 616/210 simplified gives 44/15
- So, 42/21 + 28/30 = 44/15
In mixed form: 214/15
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