Add 42/49 and 72/20
1st number: 42/49, 2nd number: 3 12/20
42/49 + 72/20 is 156/35.
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,
72/20 = 72 × 49/20 × 49 = 3528/980 - Add the two like fractions:
840/980 + 3528/980 = 840 + 3528/980 = 4368/980 - 4368/980 simplified gives 156/35
- So, 42/49 + 72/20 = 156/35
In mixed form: 416/35
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