Add 10/15 and 81/40, Solve 10/15 + 2 1/40 as a fraction

Add 10/15 and 81/40

1^st number: 10/15, 2^nd number: 2 1/40

10/15 + 81/40 is 323/120.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 40 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 15 × 8 = 120,
10/15 = 10 × 8/15 × 8 = 80/120
Likewise, for the 2nd fraction, since 40 × 3 = 120,
81/40 = 81 × 3/40 × 3 = 243/120
Add the two like fractions:
80/120 + 243/120 = 80 + 243/120 = 323/120
So, 10/15 + 81/40 = 323/120
In mixed form: 283/120

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