Add 42/90 and 24/63
42/90 + 24/63 is 89/105.
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,
42/90 = 42 × 7/90 × 7 = 294/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
24/63 = 24 × 10/63 × 10 = 240/630 - Add the two like fractions:
294/630 + 240/630 = 294 + 240/630 = 534/630 - 534/630 simplified gives 89/105
- So, 42/90 + 24/63 = 89/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/90+24/63 42/90+48/63 42/90+72/63