Add 63/84 and 80/60, Solve 63/84 + 1 20/60 as a fraction

Add 63/84 and 80/60

1^st number: 63/84, 2^nd number: 1 20/60

63/84 + 80/60 is 25/12.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 60 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 84 × 5 = 420,
63/84 = 63 × 5/84 × 5 = 315/420
Likewise, for the 2nd fraction, since 60 × 7 = 420,
80/60 = 80 × 7/60 × 7 = 560/420
Add the two like fractions:
315/420 + 560/420 = 315 + 560/420 = 875/420
875/420 simplified gives 25/12
So, 63/84 + 80/60 = 25/12
In mixed form: 21/12

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