Add 63/21 and 25/40, Solve 3 0/21 + 25/40 as a fraction

Add 63/21 and 25/40

1^st number: 3 0/21, 2^nd number: 25/40

63/21 + 25/40 is 29/8.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 40 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 21 × 40 = 840,
63/21 = 63 × 40/21 × 40 = 2520/840
Likewise, for the 2nd fraction, since 40 × 21 = 840,
25/40 = 25 × 21/40 × 21 = 525/840
Add the two like fractions:
2520/840 + 525/840 = 2520 + 525/840 = 3045/840
3045/840 simplified gives 29/8
So, 63/21 + 25/40 = 29/8
In mixed form: 35/8

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