Add 72/35 and 18/90
1st number: 2 2/35, 2nd number: 18/90
72/35 + 18/90 is 79/35.
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,
18/90 = 18 × 7/90 × 7 = 126/630 - Add the two like fractions:
1296/630 + 126/630 = 1296 + 126/630 = 1422/630 - 1422/630 simplified gives 79/35
- So, 72/35 + 18/90 = 79/35
In mixed form: 29/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/35+36/90 72/70+18/90 72/35+54/90