Add 21/84 and 60/40
1st number: 21/84, 2nd number: 1 20/40
21/84 + 60/40 is 7/4.
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,
60/40 = 60 × 21/40 × 21 = 1260/840 - Add the two like fractions:
210/840 + 1260/840 = 210 + 1260/840 = 1470/840 - 1470/840 simplified gives 7/4
- So, 21/84 + 60/40 = 7/4
In mixed form: 13/4
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