Add 72/45 and 15/42, Solve 1 27/45 + 15/42 as a fraction

Add 72/45 and 15/42

1^st number: 1 27/45, 2^nd number: 15/42

72/45 + 15/42 is 137/70.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 42 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 45 × 14 = 630,
72/45 = 72 × 14/45 × 14 = 1008/630
Likewise, for the 2nd fraction, since 42 × 15 = 630,
15/42 = 15 × 15/42 × 15 = 225/630
Add the two like fractions:
1008/630 + 225/630 = 1008 + 225/630 = 1233/630
1233/630 simplified gives 137/70
So, 72/45 + 15/42 = 137/70
In mixed form: 167/70

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