Add 30/3 and 81/40, Solve 10 0/3 + 2 1/40 as a fraction

Add 30/3 and 81/40

1^st number: 10 0/3, 2^nd number: 2 1/40

30/3 + 81/40 is 481/40.

Find the least common denominator or LCM of the two denominators:
LCM of 3 and 40 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 3 × 40 = 120,
30/3 = 30 × 40/3 × 40 = 1200/120
Likewise, for the 2nd fraction, since 40 × 3 = 120,
81/40 = 81 × 3/40 × 3 = 243/120
Add the two like fractions:
1200/120 + 243/120 = 1200 + 243/120 = 1443/120
1443/120 simplified gives 481/40
So, 30/3 + 81/40 = 481/40
In mixed form: 121/40

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