Add 80/63 and 21/28, Solve 1 17/63 + 21/28 as a fraction

Add 80/63 and 21/28

1^st number: 1 17/63, 2^nd number: 21/28

80/63 + 21/28 is 509/252.

Find the least common denominator or LCM of the two denominators:
LCM of 63 and 28 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 63 × 4 = 252,
80/63 = 80 × 4/63 × 4 = 320/252
Likewise, for the 2nd fraction, since 28 × 9 = 252,
21/28 = 21 × 9/28 × 9 = 189/252
Add the two like fractions:
320/252 + 189/252 = 320 + 189/252 = 509/252
So, 80/63 + 21/28 = 509/252
In mixed form: 25/252

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