Add 90/20 and 1/7
1st number: 4 10/20, 2nd number: 1/7
90/20 + 1/7 is 65/14.
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,
90/20 = 90 × 7/20 × 7 = 630/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
1/7 = 1 × 20/7 × 20 = 20/140 - Add the two like fractions:
630/140 + 20/140 = 630 + 20/140 = 650/140 - 650/140 simplified gives 65/14
- So, 90/20 + 1/7 = 65/14
In mixed form: 49/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/20+2/7 90/40+1/7 90/20+1/14 90/20+3/7 90/60+1/7 90/20+1/21 90/20+5/7 90/20+1/35 90/20+1/49