Add 4/90 and 60/80
4/90 + 60/80 is 143/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
4/90 = 4 × 8/90 × 8 = 32/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
60/80 = 60 × 9/80 × 9 = 540/720 - Add the two like fractions:
32/720 + 540/720 = 32 + 540/720 = 572/720 - 572/720 simplified gives 143/180
- So, 4/90 + 60/80 = 143/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/90+60/80 12/90+60/80 20/90+60/80 28/90+60/80