Add 63/42 and 10/45, Solve 1 21/42 + 10/45 as a fraction

Add 63/42 and 10/45

1^st number: 1 21/42, 2^nd number: 10/45

63/42 + 10/45 is 31/18.

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

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 42 × 15 = 630,
63/42 = 63 × 15/42 × 15 = 945/630
Likewise, for the 2nd fraction, since 45 × 14 = 630,
10/45 = 10 × 14/45 × 14 = 140/630
Add the two like fractions:
945/630 + 140/630 = 945 + 140/630 = 1085/630
1085/630 simplified gives 31/18
So, 63/42 + 10/45 = 31/18
In mixed form: 113/18

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