Add 28/42 and 72/15, Solve 28/42 + 4 12/15 as a fraction

Add 28/42 and 72/15

1^st number: 28/42, 2^nd number: 4 12/15

28/42 + 72/15 is 82/15.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 15 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 42 × 5 = 210,
28/42 = 28 × 5/42 × 5 = 140/210
Likewise, for the 2nd fraction, since 15 × 14 = 210,
72/15 = 72 × 14/15 × 14 = 1008/210
Add the two like fractions:
140/210 + 1008/210 = 140 + 1008/210 = 1148/210
1148/210 simplified gives 82/15
So, 28/42 + 72/15 = 82/15
In mixed form: 57/15

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