Add 8/70 and 70/42, Solve 8/70 + 1 28/42 as a fraction

Add 8/70 and 70/42

1^st number: 8/70, 2^nd number: 1 28/42

8/70 + 70/42 is 187/105.

Find the least common denominator or LCM of the two denominators:
LCM of 70 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 70 × 3 = 210,
8/70 = 8 × 3/70 × 3 = 24/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
70/42 = 70 × 5/42 × 5 = 350/210
Add the two like fractions:
24/210 + 350/210 = 24 + 350/210 = 374/210
374/210 simplified gives 187/105
So, 8/70 + 70/42 = 187/105
In mixed form: 182/105

MathStep (Works offline)

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