Add 9/7 and 21/80, Solve 1 2/7 + 21/80 as a fraction

Add 9/7 and 21/80

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

9/7 + 21/80 is 867/560.

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,
9/7 = 9 × 80/7 × 80 = 720/560
Likewise, for the 2nd fraction, since 80 × 7 = 560,
21/80 = 21 × 7/80 × 7 = 147/560
Add the two like fractions:
720/560 + 147/560 = 720 + 147/560 = 867/560
So, 9/7 + 21/80 = 867/560
In mixed form: 1307/560

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