Add 18/80 and 63/28, Solve 18/80 + 2 7/28 as a fraction

Add 18/80 and 63/28

1^st number: 18/80, 2^nd number: 2 7/28

18/80 + 63/28 is 99/40.

Find the least common denominator or LCM of the two denominators:
LCM of 80 and 28 is 560

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 80 × 7 = 560,
18/80 = 18 × 7/80 × 7 = 126/560
Likewise, for the 2nd fraction, since 28 × 20 = 560,
63/28 = 63 × 20/28 × 20 = 1260/560
Add the two like fractions:
126/560 + 1260/560 = 126 + 1260/560 = 1386/560
1386/560 simplified gives 99/40
So, 18/80 + 63/28 = 99/40
In mixed form: 219/40

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