Add 98/7 and 72/90
1st number: 14 0/7, 2nd number: 72/90
98/7 + 72/90 is 74/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 7 × 90 = 630,
98/7 = 98 × 90/7 × 90 = 8820/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
72/90 = 72 × 7/90 × 7 = 504/630 - Add the two like fractions:
8820/630 + 504/630 = 8820 + 504/630 = 9324/630 - 9324/630 simplified gives 74/5
- So, 98/7 + 72/90 = 74/5
In mixed form: 144/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/14+72/90 98/21+72/90 98/35+72/90 98/49+72/90