Add 15/63 and 4/90
15/63 + 4/90 is 89/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
15/63 = 15 × 10/63 × 10 = 150/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
4/90 = 4 × 7/90 × 7 = 28/630 - Add the two like fractions:
150/630 + 28/630 = 150 + 28/630 = 178/630 - 178/630 simplified gives 89/315
- So, 15/63 + 4/90 = 89/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/63+4/90 15/63+8/90 45/63+4/90 15/63+12/90 75/63+4/90 15/63+20/90 15/63+28/90