Add 28/72 and 50/21, Solve 28/72 + 2 8/21 as a fraction

Add 28/72 and 50/21

1^st number: 28/72, 2^nd number: 2 8/21

28/72 + 50/21 is 349/126.

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,
28/72 = 28 × 7/72 × 7 = 196/504
Likewise, for the 2nd fraction, since 21 × 24 = 504,
50/21 = 50 × 24/21 × 24 = 1200/504
Add the two like fractions:
196/504 + 1200/504 = 196 + 1200/504 = 1396/504
1396/504 simplified gives 349/126
So, 28/72 + 50/21 = 349/126
In mixed form: 297/126

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