Add 8/90 and 42/63
8/90 + 42/63 is 34/45.
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,
8/90 = 8 × 7/90 × 7 = 56/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
42/63 = 42 × 10/63 × 10 = 420/630 - Add the two like fractions:
56/630 + 420/630 = 56 + 420/630 = 476/630 - 476/630 simplified gives 34/45
- So, 8/90 + 42/63 = 34/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/90+42/63 8/90+84/63 24/90+42/63 40/90+42/63 56/90+42/63