Add 15/42 and 90/63, Solve 15/42 + 1 27/63 as a fraction

Add 15/42 and 90/63

1^st number: 15/42, 2^nd number: 1 27/63

15/42 + 90/63 is 25/14.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 63 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 42 × 3 = 126,
15/42 = 15 × 3/42 × 3 = 45/126
Likewise, for the 2nd fraction, since 63 × 2 = 126,
90/63 = 90 × 2/63 × 2 = 180/126
Add the two like fractions:
45/126 + 180/126 = 45 + 180/126 = 225/126
225/126 simplified gives 25/14
So, 15/42 + 90/63 = 25/14
In mixed form: 111/14

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