Add 18/20 and 50/7
1st number: 18/20, 2nd number: 7 1/7
18/20 + 50/7 is 563/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
18/20 = 18 × 7/20 × 7 = 126/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
50/7 = 50 × 20/7 × 20 = 1000/140 - Add the two like fractions:
126/140 + 1000/140 = 126 + 1000/140 = 1126/140 - 1126/140 simplified gives 563/70
- So, 18/20 + 50/7 = 563/70
In mixed form: 83/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/20+50/7 18/40+50/7 18/20+50/14 54/20+50/7 18/60+50/7 18/20+50/21 90/20+50/7 18/20+50/35 18/20+50/49