Add 21/84 and 1/40
21/84 + 1/40 is 11/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 84 × 10 = 840,
21/84 = 21 × 10/84 × 10 = 210/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
1/40 = 1 × 21/40 × 21 = 21/840 - Add the two like fractions:
210/840 + 21/840 = 210 + 21/840 = 231/840 - 231/840 simplified gives 11/40
- So, 21/84 + 1/40 = 11/40
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