Add 18/30 and 8/7
1st number: 18/30, 2nd number: 1 1/7
18/30 + 8/7 is 61/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
18/30 = 18 × 7/30 × 7 = 126/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
8/7 = 8 × 30/7 × 30 = 240/210 - Add the two like fractions:
126/210 + 240/210 = 126 + 240/210 = 366/210 - 366/210 simplified gives 61/35
- So, 18/30 + 8/7 = 61/35
In mixed form: 126/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/30+8/7 18/30+16/7 18/60+8/7 18/30+8/14 54/30+8/7 18/30+24/7 18/90+8/7 18/30+8/21 90/30+8/7 18/30+40/7 18/30+8/35 18/30+56/7 18/30+8/49