Add 20/50 and 42/81
20/50 + 42/81 is 124/135.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 81 is 4050
Next, find the equivalent fraction of both fractional numbers with denominator 4050 - For the 1st fraction, since 50 × 81 = 4050,
20/50 = 20 × 81/50 × 81 = 1620/4050 - Likewise, for the 2nd fraction, since 81 × 50 = 4050,
42/81 = 42 × 50/81 × 50 = 2100/4050 - Add the two like fractions:
1620/4050 + 2100/4050 = 1620 + 2100/4050 = 3720/4050 - 3720/4050 simplified gives 124/135
- So, 20/50 + 42/81 = 124/135
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