Add 12/72 and 42/21, Solve 12/72 + 2 0/21 as a fraction

Add 12/72 and 42/21

1^st number: 12/72, 2^nd number: 2 0/21

12/72 + 42/21 is 13/6.

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,
12/72 = 12 × 7/72 × 7 = 84/504
Likewise, for the 2nd fraction, since 21 × 24 = 504,
42/21 = 42 × 24/21 × 24 = 1008/504
Add the two like fractions:
84/504 + 1008/504 = 84 + 1008/504 = 1092/504
1092/504 simplified gives 13/6
So, 12/72 + 42/21 = 13/6
In mixed form: 21/6

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