Add 15/7 and 21/80, Solve 2 1/7 + 21/80 as a fraction

Add 15/7 and 21/80

1^st number: 2 1/7, 2^nd number: 21/80

15/7 + 21/80 is 1347/560.

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,
15/7 = 15 × 80/7 × 80 = 1200/560
Likewise, for the 2nd fraction, since 80 × 7 = 560,
21/80 = 21 × 7/80 × 7 = 147/560
Add the two like fractions:
1200/560 + 147/560 = 1200 + 147/560 = 1347/560
So, 15/7 + 21/80 = 1347/560
In mixed form: 2227/560

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