Add 10/72 and 40/21, Solve 10/72 + 1 19/21 as a fraction

Add 10/72 and 40/21

1^st number: 10/72, 2^nd number: 1 19/21

10/72 + 40/21 is 515/252.

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,
10/72 = 10 × 7/72 × 7 = 70/504
Likewise, for the 2nd fraction, since 21 × 24 = 504,
40/21 = 40 × 24/21 × 24 = 960/504
Add the two like fractions:
70/504 + 960/504 = 70 + 960/504 = 1030/504
1030/504 simplified gives 515/252
So, 10/72 + 40/21 = 515/252
In mixed form: 211/252

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