Add 72/8 and 98/20
1st number: 9 0/8, 2nd number: 4 18/20
72/8 + 98/20 is 139/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
72/8 = 72 × 5/8 × 5 = 360/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
98/20 = 98 × 2/20 × 2 = 196/40 - Add the two like fractions:
360/40 + 196/40 = 360 + 196/40 = 556/40 - 556/40 simplified gives 139/10
- So, 72/8 + 98/20 = 139/10
In mixed form: 139/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/16+98/20 72/8+98/40 72/24+98/20 72/8+98/60 72/40+98/20 72/56+98/20