Add 28/90 and 18/35
28/90 + 18/35 is 52/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 35 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
28/90 = 28 × 7/90 × 7 = 196/630 - Likewise, for the 2nd fraction, since 35 × 18 = 630,
18/35 = 18 × 18/35 × 18 = 324/630 - Add the two like fractions:
196/630 + 324/630 = 196 + 324/630 = 520/630 - 520/630 simplified gives 52/63
- So, 28/90 + 18/35 = 52/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90+18/35 28/90+36/35 28/90+18/70 84/90+18/35 28/90+54/35 28/90+90/35