Add 72/35 and 98/90
1st number: 2 2/35, 2nd number: 1 8/90
72/35 + 98/90 is 991/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 35 × 18 = 630,
72/35 = 72 × 18/35 × 18 = 1296/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
98/90 = 98 × 7/90 × 7 = 686/630 - Add the two like fractions:
1296/630 + 686/630 = 1296 + 686/630 = 1982/630 - 1982/630 simplified gives 991/315
- So, 72/35 + 98/90 = 991/315
In mixed form: 346/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/70+98/90