Add 4/90 and 4/12
4/90 + 4/12 is 17/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
4/90 = 4 × 2/90 × 2 = 8/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
4/12 = 4 × 15/12 × 15 = 60/180 - Add the two like fractions:
8/180 + 60/180 = 8 + 60/180 = 68/180 - 68/180 simplified gives 17/45
- So, 4/90 + 4/12 = 17/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/90+4/12 4/90+8/12 4/90+4/24 12/90+4/12 4/90+4/36 20/90+4/12 4/90+20/12 4/90+4/60 28/90+4/12 4/90+28/12 4/90+4/84