Add 21/84 and 15/50
21/84 + 15/50 is 11/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 50 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 84 × 25 = 2100,
21/84 = 21 × 25/84 × 25 = 525/2100 - Likewise, for the 2nd fraction, since 50 × 42 = 2100,
15/50 = 15 × 42/50 × 42 = 630/2100 - Add the two like fractions:
525/2100 + 630/2100 = 525 + 630/2100 = 1155/2100 - 1155/2100 simplified gives 11/20
- So, 21/84 + 15/50 = 11/20
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