Add 18/72 and 56/21, Solve 18/72 + 2 14/21 as a fraction

Add 18/72 and 56/21

1^st number: 18/72, 2^nd number: 2 14/21

18/72 + 56/21 is 35/12.

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,
18/72 = 18 × 7/72 × 7 = 126/504
Likewise, for the 2nd fraction, since 21 × 24 = 504,
56/21 = 56 × 24/21 × 24 = 1344/504
Add the two like fractions:
126/504 + 1344/504 = 126 + 1344/504 = 1470/504
1470/504 simplified gives 35/12
So, 18/72 + 56/21 = 35/12
In mixed form: 211/12

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