Add 18/7 and 3/30, Solve 2 4/7 + 3/30 as a fraction

Add 18/7 and 3/30

1^st number: 2 4/7, 2^nd number: 3/30

18/7 + 3/30 is 187/70.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 30 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 7 × 30 = 210,
18/7 = 18 × 30/7 × 30 = 540/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
3/30 = 3 × 7/30 × 7 = 21/210
Add the two like fractions:
540/210 + 21/210 = 540 + 21/210 = 561/210
561/210 simplified gives 187/70
So, 18/7 + 3/30 = 187/70
In mixed form: 247/70

MathStep (Works offline)

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