Add 42/49 and 15/20
42/49 + 15/20 is 45/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 20 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 49 × 20 = 980,
42/49 = 42 × 20/49 × 20 = 840/980 - Likewise, for the 2nd fraction, since 20 × 49 = 980,
15/20 = 15 × 49/20 × 49 = 735/980 - Add the two like fractions:
840/980 + 735/980 = 840 + 735/980 = 1575/980 - 1575/980 simplified gives 45/28
- So, 42/49 + 15/20 = 45/28
In mixed form: 117/28
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