Add 20/50 and 21/42
20/50 + 21/42 is 9/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 42 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 50 × 21 = 1050,
20/50 = 20 × 21/50 × 21 = 420/1050 - Likewise, for the 2nd fraction, since 42 × 25 = 1050,
21/42 = 21 × 25/42 × 25 = 525/1050 - Add the two like fractions:
420/1050 + 525/1050 = 420 + 525/1050 = 945/1050 - 945/1050 simplified gives 9/10
- So, 20/50 + 21/42 = 9/10
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