Add 24/15 and 75/21, Solve 1 9/15 + 3 12/21 as a fraction

Add 24/15 and 75/21

1^st number: 1 9/15, 2^nd number: 3 12/21

24/15 + 75/21 is 181/35.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 21 is 105

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 15 × 7 = 105,
24/15 = 24 × 7/15 × 7 = 168/105
Likewise, for the 2nd fraction, since 21 × 5 = 105,
75/21 = 75 × 5/21 × 5 = 375/105
Add the two like fractions:
168/105 + 375/105 = 168 + 375/105 = 543/105
543/105 simplified gives 181/35
So, 24/15 + 75/21 = 181/35
In mixed form: 56/35

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