Add 63/90 and 42/63
63/90 + 42/63 is 41/30.
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,
63/90 = 63 × 7/90 × 7 = 441/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
42/63 = 42 × 10/63 × 10 = 420/630 - Add the two like fractions:
441/630 + 420/630 = 441 + 420/630 = 861/630 - 861/630 simplified gives 41/30
- So, 63/90 + 42/63 = 41/30
In mixed form: 111/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/90+84/63