Add 42/2 and 15/20
1st number: 21 0/2, 2nd number: 15/20
42/2 + 15/20 is 87/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 2 × 10 = 20,
42/2 = 42 × 10/2 × 10 = 420/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
15/20 = 15 × 1/20 × 1 = 15/20 - Add the two like fractions:
420/20 + 15/20 = 420 + 15/20 = 435/20 - 435/20 simplified gives 87/4
- So, 42/2 + 15/20 = 87/4
In mixed form: 213/4
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