Add 28/10 and 42/4, Solve 2 8/10 + 10 2/4 as a fraction

Add 28/10 and 42/4

1^st number: 2 8/10, 2^nd number: 10 2/4

28/10 + 42/4 is 133/10.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 4 is 20

Next, find the equivalent fraction of both fractional numbers with denominator 20
For the 1st fraction, since 10 × 2 = 20,
28/10 = 28 × 2/10 × 2 = 56/20
Likewise, for the 2nd fraction, since 4 × 5 = 20,
42/4 = 42 × 5/4 × 5 = 210/20
Add the two like fractions:
56/20 + 210/20 = 56 + 210/20 = 266/20
266/20 simplified gives 133/10
So, 28/10 + 42/4 = 133/10
In mixed form: 133/10

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