Add 15/14 and 72/20, Solve 1 1/14 + 3 12/20 as a fraction

Add 15/14 and 72/20

1^st number: 1 1/14, 2^nd number: 3 12/20

15/14 + 72/20 is 327/70.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 20 is 140

Next, find the equivalent fraction of both fractional numbers with denominator 140
For the 1st fraction, since 14 × 10 = 140,
15/14 = 15 × 10/14 × 10 = 150/140
Likewise, for the 2nd fraction, since 20 × 7 = 140,
72/20 = 72 × 7/20 × 7 = 504/140
Add the two like fractions:
150/140 + 504/140 = 150 + 504/140 = 654/140
654/140 simplified gives 327/70
So, 15/14 + 72/20 = 327/70
In mixed form: 447/70

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