Add 21/56 and 84/80
1st number: 21/56, 2nd number: 1 4/80
21/56 + 84/80 is 57/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 56 × 10 = 560,
21/56 = 21 × 10/56 × 10 = 210/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
84/80 = 84 × 7/80 × 7 = 588/560 - Add the two like fractions:
210/560 + 588/560 = 210 + 588/560 = 798/560 - 798/560 simplified gives 57/40
- So, 21/56 + 84/80 = 57/40
In mixed form: 117/40
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