Add 90/25 and 28/42, Solve 3 15/25 + 28/42 as a fraction

Add 90/25 and 28/42

1^st number: 3 15/25, 2^nd number: 28/42

90/25 + 28/42 is 64/15.

Find the least common denominator or LCM of the two denominators:
LCM of 25 and 42 is 1050

Next, find the equivalent fraction of both fractional numbers with denominator 1050
For the 1st fraction, since 25 × 42 = 1050,
90/25 = 90 × 42/25 × 42 = 3780/1050
Likewise, for the 2nd fraction, since 42 × 25 = 1050,
28/42 = 28 × 25/42 × 25 = 700/1050
Add the two like fractions:
3780/1050 + 700/1050 = 3780 + 700/1050 = 4480/1050
4480/1050 simplified gives 64/15
So, 90/25 + 28/42 = 64/15
In mixed form: 44/15

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