Add 42/15 and 49/20
1st number: 2 12/15, 2nd number: 2 9/20
42/15 + 49/20 is 21/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
42/15 = 42 × 4/15 × 4 = 168/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
49/20 = 49 × 3/20 × 3 = 147/60 - Add the two like fractions:
168/60 + 147/60 = 168 + 147/60 = 315/60 - 315/60 simplified gives 21/4
- So, 42/15 + 49/20 = 21/4
In mixed form: 51/4
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