Add 8/36 and 42/90
8/36 + 42/90 is 31/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
8/36 = 8 × 5/36 × 5 = 40/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
42/90 = 42 × 2/90 × 2 = 84/180 - Add the two like fractions:
40/180 + 84/180 = 40 + 84/180 = 124/180 - 124/180 simplified gives 31/45
- So, 8/36 + 42/90 = 31/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/36+42/90 8/36+84/90 8/72+42/90 24/36+42/90 40/36+42/90 56/36+42/90