Add 8/72 and 42/21, Solve 8/72 + 2 0/21 as a fraction

Add 8/72 and 42/21

1^st number: 8/72, 2^nd number: 2 0/21

8/72 + 42/21 is 19/9.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 21 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 72 × 7 = 504,
8/72 = 8 × 7/72 × 7 = 56/504
Likewise, for the 2nd fraction, since 21 × 24 = 504,
42/21 = 42 × 24/21 × 24 = 1008/504
Add the two like fractions:
56/504 + 1008/504 = 56 + 1008/504 = 1064/504
1064/504 simplified gives 19/9
So, 8/72 + 42/21 = 19/9
In mixed form: 21/9

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