Add 90/28 and 27/80, Solve 3 6/28 + 27/80 as a fraction

Add 90/28 and 27/80

1^st number: 3 6/28, 2^nd number: 27/80

90/28 + 27/80 is 1989/560.

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

Next, find the equivalent fraction of both fractional numbers with denominator 560
For the 1st fraction, since 28 × 20 = 560,
90/28 = 90 × 20/28 × 20 = 1800/560
Likewise, for the 2nd fraction, since 80 × 7 = 560,
27/80 = 27 × 7/80 × 7 = 189/560
Add the two like fractions:
1800/560 + 189/560 = 1800 + 189/560 = 1989/560
So, 90/28 + 27/80 = 1989/560
In mixed form: 3309/560

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