Add 28/21 and 6/72, Solve 1 7/21 + 6/72 as a fraction

Add 28/21 and 6/72

1^st number: 1 7/21, 2^nd number: 6/72

28/21 + 6/72 is 17/12.

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

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 21 × 24 = 504,
28/21 = 28 × 24/21 × 24 = 672/504
Likewise, for the 2nd fraction, since 72 × 7 = 504,
6/72 = 6 × 7/72 × 7 = 42/504
Add the two like fractions:
672/504 + 42/504 = 672 + 42/504 = 714/504
714/504 simplified gives 17/12
So, 28/21 + 6/72 = 17/12
In mixed form: 15/12

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