Add 28/10 and 21/75, Solve 2 8/10 + 21/75 as a fraction

Add 28/10 and 21/75

1^st number: 2 8/10, 2^nd number: 21/75

28/10 + 21/75 is 77/25.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 75 is 150

Next, find the equivalent fraction of both fractional numbers with denominator 150
For the 1st fraction, since 10 × 15 = 150,
28/10 = 28 × 15/10 × 15 = 420/150
Likewise, for the 2nd fraction, since 75 × 2 = 150,
21/75 = 21 × 2/75 × 2 = 42/150
Add the two like fractions:
420/150 + 42/150 = 420 + 42/150 = 462/150
462/150 simplified gives 77/25
So, 28/10 + 21/75 = 77/25
In mixed form: 32/25

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