Add 20/42 and 63/8, Solve 20/42 + 7 7/8 as a fraction

Add 20/42 and 63/8

1^st number: 20/42, 2^nd number: 7 7/8

20/42 + 63/8 is 1403/168.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 8 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 42 × 4 = 168,
20/42 = 20 × 4/42 × 4 = 80/168
Likewise, for the 2nd fraction, since 8 × 21 = 168,
63/8 = 63 × 21/8 × 21 = 1323/168
Add the two like fractions:
80/168 + 1323/168 = 80 + 1323/168 = 1403/168
So, 20/42 + 63/8 = 1403/168
In mixed form: 859/168

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