Add 42/20 and 81/49
1st number: 2 2/20, 2nd number: 1 32/49
42/20 + 81/49 is 1839/490.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 49 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 20 × 49 = 980,
42/20 = 42 × 49/20 × 49 = 2058/980 - Likewise, for the 2nd fraction, since 49 × 20 = 980,
81/49 = 81 × 20/49 × 20 = 1620/980 - Add the two like fractions:
2058/980 + 1620/980 = 2058 + 1620/980 = 3678/980 - 3678/980 simplified gives 1839/490
- So, 42/20 + 81/49 = 1839/490
In mixed form: 3369/490
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