Add 27/90 and 12/63
27/90 + 12/63 is 103/210.
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,
27/90 = 27 × 7/90 × 7 = 189/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
12/63 = 12 × 10/63 × 10 = 120/630 - Add the two like fractions:
189/630 + 120/630 = 189 + 120/630 = 309/630 - 309/630 simplified gives 103/210
- So, 27/90 + 12/63 = 103/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/90+12/63 27/90+24/63 81/90+12/63 27/90+36/63 27/90+60/63 27/90+84/63