Add 21/14 and 30/80
1st number: 1 7/14, 2nd number: 30/80
21/14 + 30/80 is 15/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 14 × 40 = 560,
21/14 = 21 × 40/14 × 40 = 840/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
30/80 = 30 × 7/80 × 7 = 210/560 - Add the two like fractions:
840/560 + 210/560 = 840 + 210/560 = 1050/560 - 1050/560 simplified gives 15/8
- So, 21/14 + 30/80 = 15/8
In mixed form: 17/8
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