Add 98/10 and 9/42, Solve 9 8/10 + 9/42 as a fraction

Add 98/10 and 9/42

1^st number: 9 8/10, 2^nd number: 9/42

98/10 + 9/42 is 701/70.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 10 × 21 = 210,
98/10 = 98 × 21/10 × 21 = 2058/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
9/42 = 9 × 5/42 × 5 = 45/210
Add the two like fractions:
2058/210 + 45/210 = 2058 + 45/210 = 2103/210
2103/210 simplified gives 701/70
So, 98/10 + 9/42 = 701/70
In mixed form: 101/70

MathStep (Works offline)

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