Add 1/42 and 10/8, Solve 1/42 + 1 2/8 as a fraction

Add 1/42 and 10/8

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

1/42 + 10/8 is 107/84.

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,
1/42 = 1 × 4/42 × 4 = 4/168
Likewise, for the 2nd fraction, since 8 × 21 = 168,
10/8 = 10 × 21/8 × 21 = 210/168
Add the two like fractions:
4/168 + 210/168 = 4 + 210/168 = 214/168
214/168 simplified gives 107/84
So, 1/42 + 10/8 = 107/84
In mixed form: 123/84

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad