Add 21/7 and 5/80
1st number: 3 0/7, 2nd number: 5/80
21/7 + 5/80 is 49/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 7 × 80 = 560,
21/7 = 21 × 80/7 × 80 = 1680/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
5/80 = 5 × 7/80 × 7 = 35/560 - Add the two like fractions:
1680/560 + 35/560 = 1680 + 35/560 = 1715/560 - 1715/560 simplified gives 49/16
- So, 21/7 + 5/80 = 49/16
In mixed form: 31/16
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