Add 72/98 and 98/70
1st number: 72/98, 2nd number: 1 28/70
72/98 + 98/70 is 523/245.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 70 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 98 × 5 = 490,
72/98 = 72 × 5/98 × 5 = 360/490 - Likewise, for the 2nd fraction, since 70 × 7 = 490,
98/70 = 98 × 7/70 × 7 = 686/490 - Add the two like fractions:
360/490 + 686/490 = 360 + 686/490 = 1046/490 - 1046/490 simplified gives 523/245
- So, 72/98 + 98/70 = 523/245
In mixed form: 233/245
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: