Add 21/72 and 40/3, Solve 21/72 + 13 1/3 as a fraction

Add 21/72 and 40/3

1^st number: 21/72, 2^nd number: 13 1/3

21/72 + 40/3 is 109/8.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 3 is 72

Next, find the equivalent fraction of both fractional numbers with denominator 72
For the 1st fraction, since 72 × 1 = 72,
21/72 = 21 × 1/72 × 1 = 21/72
Likewise, for the 2nd fraction, since 3 × 24 = 72,
40/3 = 40 × 24/3 × 24 = 960/72
Add the two like fractions:
21/72 + 960/72 = 21 + 960/72 = 981/72
981/72 simplified gives 109/8
So, 21/72 + 40/3 = 109/8
In mixed form: 135/8

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