Add 63/12 and 30/40, Solve 5 3/12 + 30/40 as a fraction

Add 63/12 and 30/40

1^st number: 5 3/12, 2^nd number: 30/40

63/12 + 30/40 is 6/1.

Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 12 × 10 = 120,
63/12 = 63 × 10/12 × 10 = 630/120
Likewise, for the 2nd fraction, since 40 × 3 = 120,
30/40 = 30 × 3/40 × 3 = 90/120
Add the two like fractions:
630/120 + 90/120 = 630 + 90/120 = 720/120
720/120 simplified gives 6/1
So, 63/12 + 30/40 = 6/1

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