Add 28/5 and 45/21, Solve 5 3/5 + 2 3/21 as a fraction

Add 28/5 and 45/21

1^st number: 5 3/5, 2^nd number: 2 3/21

28/5 + 45/21 is 271/35.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 5 × 21 = 105,
28/5 = 28 × 21/5 × 21 = 588/105
Likewise, for the 2nd fraction, since 21 × 5 = 105,
45/21 = 45 × 5/21 × 5 = 225/105
Add the two like fractions:
588/105 + 225/105 = 588 + 225/105 = 813/105
813/105 simplified gives 271/35
So, 28/5 + 45/21 = 271/35
In mixed form: 726/35

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