Add 15/90 and 35/63
15/90 + 35/63 is 13/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
15/90 = 15 × 7/90 × 7 = 105/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
35/63 = 35 × 10/63 × 10 = 350/630 - Add the two like fractions:
105/630 + 350/630 = 105 + 350/630 = 455/630 - 455/630 simplified gives 13/18
- So, 15/90 + 35/63 = 13/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/90+35/63 15/90+70/63 45/90+35/63 75/90+35/63