Add 10/90 and 42/54
10/90 + 42/54 is 8/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 90 × 3 = 270,
10/90 = 10 × 3/90 × 3 = 30/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
42/54 = 42 × 5/54 × 5 = 210/270 - Add the two like fractions:
30/270 + 210/270 = 30 + 210/270 = 240/270 - 240/270 simplified gives 8/9
- So, 10/90 + 42/54 = 8/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/90+42/54 10/90+84/54 30/90+42/54 50/90+42/54 70/90+42/54