Add 10/42 and 21/8, Solve 10/42 + 2 5/8 as a fraction

Add 10/42 and 21/8

1^st number: 10/42, 2^nd number: 2 5/8

10/42 + 21/8 is 481/168.

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,
10/42 = 10 × 4/42 × 4 = 40/168
Likewise, for the 2nd fraction, since 8 × 21 = 168,
21/8 = 21 × 21/8 × 21 = 441/168
Add the two like fractions:
40/168 + 441/168 = 40 + 441/168 = 481/168
So, 10/42 + 21/8 = 481/168
In mixed form: 2145/168

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