Add 4/9 and 42/90
4/9 + 42/90 is 41/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
4/9 = 4 × 10/9 × 10 = 40/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
42/90 = 42 × 1/90 × 1 = 42/90 - Add the two like fractions:
40/90 + 42/90 = 40 + 42/90 = 82/90 - 82/90 simplified gives 41/45
- So, 4/9 + 42/90 = 41/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/9+42/90 4/9+84/90 4/18+42/90 12/9+42/90 4/27+42/90 20/9+42/90 4/45+42/90 28/9+42/90 4/63+42/90